GOLF CLUB HEAD

1 . A golf club head comprising:

a body having a face, a crown and a sole together defining an interior cavity, the body having a sliding weight track with first and second opposing ledges extending within the sliding weight track;

at least one crown opening and at least one crown insert attached to the body and covering the at least one crown opening;

at least one sole opening and at least one sole insert attached to the body and covering the at least one sole opening;

at least one weight member configured to clamp the first and second ledges at selected locations along the sliding weight track;

the at least one weight member is located entirely external to the interior cavity of the body and comprises an outer member, an inner member, and a threaded fastening bolt that connects the outer member to the inner member; and

a coefficient of restitution (COR) feature located on the sole of the golf club head;

wherein the at least one crown insert formed from a composite material having a density between 1 g/cc and 2 g/cc; and

wherein the at least one sole insert formed from a composite material having a density between 1 g/cc and 2 g/cc.

2 . The golf club head of claim 1 , wherein at least one of the inner member and the outer member are noncircular and shaped to prevent rotation upon tightening the threaded fastening bolt.

3 . The golf club head of claim 1 , wherein the outer member comprises a central protrusion that extends into a space between the first and second ledges, the outer member further comprising first and second recessed surfaces on opposite sides of the central protrusion, the first recessed surface being configured to contact the first ledge and the second recessed surface being configured to contact the second ledge.

4 . The golf club head of claim 3 , wherein when the at least one weight member is secured to the sliding weight track the outer member engages an outward facing surface of the at least one ledge and the inner member engages an inward-facing surface of the at least one ledge, and the threaded fastening bolt has a threaded shaft that extends through a first aperture of the outer member and engages mating threads located in a second aperture of the inner member.

5 . The golf club head of claim 1 , wherein the at least one crown insert having thickness ranging from about 0.195 mm to about 0.9 mm.

6 . The golf club head of claim 1 , wherein the at least one sole insert having thickness ranging from about 0.195 mm to about 0.9 mm.

7 . The golf club head of claim 1 , wherein the body is formed of steel.

8 . The golf club head of claim 1 , wherein the body is formed of titanium.

9 . The golf club head of claim 1 , wherein the crown insert is comprised of at least four plies of uni-tape standard modulus graphite.

10 . The golf club head of claim 9 , wherein the at least four plies being oriented at any combination of 0°, +45°, −45° and 90°.

11 . The golf club head of claim 1 , wherein the sole insert is comprised of at least four plies of uni-tape standard modulus graphite.

12 . The golf club head of claim 11 , wherein the at least four plies being oriented at any combination of 0°, +45°, −45° and 90°.

13 . The golf club head of claim 1 , wherein:

the at least one crown insert and the at least one sole insert each having a thickness ranging from about 0.195 mm to about 0.9 mm; and

the at least one crown insert and the at least one sole insert being comprised of at least four plies of uni-tape standard modulus graphite being oriented at any combination of 0°, +45°, −45° and 90°.

14 . The golf club head of claim 13 , wherein the body is formed of steel.

15 . The golf club head of claim 13 , wherein the body is formed of titanium.

16 . The golf club head of claim 1 , further comprising:

a heel opening located on a heel end of the body, the heel opening configured to receive a fastening member; and

a head-shaft connection system including a sleeve that is secured by the fastening member in a locked position, the head-shaft connection system configured to allow the golf club head to be adjustably attachable to a golf club shaft in a plurality of different positions resulting in an adjustability range of different combinations of loft angle, face angle, or lie angle.

17 . The golf club head of claim 1 , wherein the COR feature is a channel.

18 . The golf club head of claim 1 , wherein the COR feature is a through slot.

19 . The golf club head of claim 1 , wherein the golf club head has a volume between 130 cm 3 and 220 cm 3 .

20 . A golf club head comprising:

a body having a face, a crown and a sole together defining an interior cavity, a sliding weight track with first and second opposing ledges extending within the sliding weight track;

at least one weight member movably positioned within the sliding weight track and configured to clamp the first and second ledges at selected locations along the sliding weight track;

a coefficient of restitution (COR) feature located on the sole of the golf club head, wherein the COR feature is a through slot;

a heel opening located on a heel end of the body, the heel opening configured to receive a fastening member; and

a head-shaft connection system including a sleeve that is secured by the fastening member in a locked position, the head-shaft connection system configured to allow the golf club head to be adjustably attachable to a golf club shaft in a plurality of different positions resulting in an adjustability range of different combinations of loft angle, face angle, or lie angle;

wherein at least a portion of the sliding weight track is located on a heel side of the body and at least a portion of the sliding weight track is located on a toe side of the body;

wherein a single tool is used for adjusting the at least one weight and the head-shaft connection system;

wherein over at least a portion of the sliding weight track a width of the sliding weight track is between about 8 mm and about 20 mm, and a depth of the sliding weight track is be between about 6 mm and about 20 mm;

wherein the golf club head has a weight between about 210 grams and 240 grams, a Delta 1 value less than 14 mm, and a CGz less than −3 mm; and

wherein the golf club head has a volume between 80 cm 3 and 220 cm 3 .

21 - 22 . (canceled)