Descriptions: The most critical part of the golf club is the head. The weight, hardness, elasticity and flatness of the head will affect the ball's movement. According to different personal habit, each person has a different physiological need for the weight of the club. Features: 1. This golf club head weight screw is made of qualified alloy, solid, firm and durable to use, ensures a long time service. 2. The weight screw is made to maintain a good sense of comfort in use for everyone by changing the weight of the head. 3. Perfect fit for M5 Driver Head. 4. 4g,7g,8g,11g,12g are available. 5. Great accessory for Golf players. Specifications: Condition: 100% Brand New and High Quality Material: Alloy Color: Black Options: 4g,7g,,8g,11g,12g Quantity: 1Pc Size: Approx. 1.4*1.4*0.8cm/0.55*0.55*0.3inch Weight: Approx. 5.5g-13.5g package listing: Counterweight screw*1