Golf Glossary
Club Head
In short
The club head is the part of the golf club that strikes the ball. It consists of the face, sole, crown, heel, toe and hosel. Shape, weight and material determine loft, forgiveness and feel. Driver heads are large and hollow, iron heads smaller and more compact, putter heads flat or blocky.
What is the club head?
The club head sits at the lower end of the shaft and strikes the ball. Everything that builds up in the swing in speed, weight and direction arrives here. That is why the head is the component with the greatest influence on feel, forgiveness and ball flight.
Every club in the bag has its own head. They differ in size, shape and weight. A driver has a large, hollow head. An iron is more compact and usually made of solid steel. A putter has a flat or wide head with very little loft. What all heads share is a face that strikes the ball.
For beginners it is worth knowing the construction. You then understand why different clubs feel different and why manufacturers offer so many variations.
Construction: the parts of a club head
A club head consists of several clearly named parts:
- Face: the surface that strikes the ball. It often carries fine grooves.
- Grooves: they create friction and help with spin, especially from rough or in wet conditions.
- Sole: the underside of the head that sits on the ground at address.
- Crown: the top of the head that you see from above at address. On woods and drivers it is curved.
- Heel: the end of the face nearest the shaft.
- Toe: the end of the face furthest from the shaft.
- Hosel: the neck of the head into which the shaft is fitted.
- Topline: the upper edge on irons. It is thin on a blade and thicker on a cavity back.
- Back (cavity): on cavity back irons a hollow in which the weight is moved to the edge.
Together these parts determine how the club looks at address and performs at impact.
The club head on drivers, irons and putters
The heads of the different club types differ markedly.
Drivers and woods: the head is hollow and large. Its volume is given in cubic centimetres. A driver usually reaches 440 to 460 cubic centimetres. Fairway woods are clearly smaller. The large heads have a high moment of inertia. As a result the head twists less on mishits and the ball strays less from the target.
Irons: the head is compact, flat and usually made of steel. There are two basic shapes: blade or muscle back with a solid back, and cavity back with a hollow. The length of the face and the thickness of topline and sole determine how forgiving an iron is.
Wedges: they have a wide sole with bounce and plenty of loft. The sole shape, called the grind, determines how the club glides through sand and rough.
Putters: the heads are either blade-shaped or large and blocky (mallet). They have little loft and are built for roll and alignment.
Materials and manufacture
Club heads are made of various materials. Wooden heads made of persimmon, a hard North American wood, used to be common. Today metals predominate.
Drivers and woods are usually made of titanium or steel. Titanium is light and strong. It allows manufacturers to build large, hollow heads without making them too heavy. Many heads also have parts made of carbon composite, for example in the crown. This saves weight and allows it to be placed deliberately elsewhere.
Irons are mostly made of steel. There are two methods of manufacture:
- Forged: the head is shaped from a piece of steel. It feels softer and is easier to adjust in loft and lie.
- Cast: the head is cast from molten metal. This allows complex shapes with a cavity and built-in weighting and is the basis of many forgiving irons.
Milled heads are also common on wedges and putters. The material mainly influences feel and the manufacturers’ options for distributing weight within the head.
Centre of gravity, inertia and forgiveness
The club head also determines how forgiving a club is. Two terms matter here.
Centre of gravity: this is the point at which the head could be balanced. If it is low and far back, the ball launches more easily and gets more height. That helps beginners, who often lack height. If it is further forward and higher, the ball flies lower.
Moment of inertia: it describes how much the head twists on an off-centre strike. A high moment of inertia means the head stays stable. Mishits then lose less distance and direction. Weight on the edges of the head, as on cavity back irons and large drivers, raises this value.
Then there is the sweet spot, the zone of best contact. The larger the head and the more weight on the edge, the larger it is. A small head with weight in the middle, like a blade, gives a clear feel but little forgiveness.
Rules for the club head
The Rules of Golf set technical limits for clubs. The following apply to the club head, among others:
- Volume: the head of a wood must not exceed 460 cubic centimetres. A tolerance of 10 cubic centimetres applies.
- Spring effect: the face must not catapult the ball too strongly. The rules limit this effect with a measurement called characteristic time. It is at most 239 microseconds plus a tolerance.
- Grooves: the shape and spacing of the grooves on the face are limited.
- Conformity: a club must comply with the rules. A breach can lead to disqualification in competitions.
In addition Rule 4.1b limits the number of clubs to a maximum of 14. Anyone carrying more receives a penalty. Manufacturers submit their models to the governing bodies for testing. For drivers, the R&A and USGA keep a list of conforming driver heads. If your driver is on it, you are on the safe side for competitions.
Practical example and common buying mistakes
Two players each hit ten drives. Player A plays a driver of 460 cubic centimetres with a wide head. Player B plays a smaller head with less inertia.
On strikes in the middle both balls fly about 200 metres. On a strike two centimetres towards the heel, player A loses about 10 metres. The ball drifts slightly off line and stays on the fairway. Player B loses about 20 metres. The ball drifts further and ends up in the rough.
The example shows how a larger head absorbs mistakes better. It also shows that distance alone does not decide. A consistently good dispersion brings more on a par 4 of 380 metres than a single very long drive. The numbers are an example, and the values depend on the model and swing.
Typical mistakes occur when buying club heads:
- Choosing by looks: a beautiful head is no use if it does not suit your game. Look for forgiveness and feel.
- A head that is too small: beginners often buy heads built for very good players. The result is many weak strikes.
- Ignoring loft: loft is stamped on the head and determines launch height. Too little loft is a common reason for balls that fly too low.
- Considering head and shaft separately: the two must match, otherwise the set-up suffers.
One tip: try different heads on a range with a launch monitor. That shows you distance, dispersion and launch height in black and white. A fitting also shows which head shape and loft suit your swing.
Try it at Golf Lounge
The data shows how your club head behaves at impact. The covered TrackMan range at Golf Lounge Resort Hamburg has 32 bays on two levels, and TrackMan measures the ball flight at every bay. After each shot you see carry, total distance, launch angle, height and ball speed. That lets you compare distance and dispersion of different clubs. The TrackMan Range app also shows the values on your smartphone. The range is heated and open all year round.
Frequently asked questions
What is the club head in golf?
The club head is the part of the golf club that strikes the ball. It consists of the face, sole, crown, heel, toe and hosel. Its weight, shape and material determine loft, forgiveness and feel. Every club in the bag has its own head.
What are club heads made of?
Drivers and woods are usually made of titanium or steel, often with carbon parts in the crown. Irons are mostly steel, either forged or cast. Persimmon wooden heads used to be common. Wedges and putters are often milled. The material mainly affects feel and weight distribution.
How big may a driver head be?
Under the Rules of Golf the head of a wood may have a volume of at most 460 cubic centimetres, with a tolerance of 10 cubic centimetres. Most modern drivers use this limit fully or almost fully, because large heads have a high moment of inertia and forgive mishits better.
What is the difference between a blade and a cavity back head?
A blade or muscle back has a compact, solid head with a thin topline and plenty of feel, but forgives little. A cavity back has a hollow in the back with the weight around the edge. That enlarges the sweet spot and makes mishits more forgiving.
How important is the club head for distance?
The head influences distance through loft, centre of gravity and moment of inertia. A suitable head gives a better launch angle and spin and loses less distance on mishits. Shaft, length and your technique are just as important. A fitting shows which head suits your swing.
As of: October 2026