Set of 10 Weights Cylinder weights, with retractable hooks on either end Includes five 50g weights, and five 25g weights 50g weights measure approximately 2.5" long, and 25g weights measure approximately 1.75" long. Great tool for physics experiments Set of 10 hooked weights, made of premium quality brass. Precisely machined for accuracy. Excellent tool for physics experiments. Set includes (5) 50 gram weights, and (5) 25 gram weights. Hooks are retractable on both ends, and are perfect for hanging in tandem with other weights. Useful for a variety of physics experiments. 50g weights measure 2.5" long (including hooks), and have a diameter of 0.75". 25g weights measure 1.75" long (including hooks), and have a diameter of 0.6".