Fits for Odyssey Stroke Lab Series putters, Double Wide Flow / 2-Ball / #7 / V-Line Putter etc Diameter of the weight: 0.795'' (20.19mm). Weight gram for choose: 5g, 10g, 15g, 20g, 25g, 30g, 35g. You will get what you choosed. Package include: 2 x 30 Gram Enables you to change the weight of golf club to fit various needs. DAZUZ Golf Head Weights Compatible with Callaway Odyssey Triple Track, Stroke Lab, White Hot OG Putter O-Works Putter2x30g