Features: 1.PREMIUM QUALITY:Made of qualified stainless steel and tungsten steel materials, solid, firm and durability to use, ensure a long time service. 2.GOOD PERFORMANCE:It can help you increase the head weight, adjust your swing weight, lower the center of gravity position and help hit the ball further. 3.EASY TO USE:Adopt simple structure, lightweight, practical, durability, wear resistant, easy to use and portable to carry. 4.GREAT GIFT:May be a nice gift for any golfer, also can be used as a Christmas gift for your family, friends, colleague and yourself. Specifications: Condition: 100% Brand New and High Quality Material: Stainless Steel, Tungsten Steel Color: Silver Optional Type: 2g, 4g, 6g, 7g, 9g, 10g Quantity: 1Pc Weight: Approx. 3-11g / 0.1-0.4oz Size: Approx. 1 * 1cm / 0.4 * 0.4in(2g), 1 * 1.3cm / 0.4 * 0.5in(4g), 1 * 1.8cm / 0.4 * 0.7in(6g), 1 * 1.4cm / 0.4 * 0.6in(7g), 1 * 1.4cm / 0.4 * 0.6in(9g), 1 * 1.4cm / 0.4 * 0.6in(10g) Suitable for M4 driver head. Package list: 1 * Driver Head Weight Screw