Product Specifications: Material: 304 stainless steel. Package Size: 5.3 x 2.8 inches (13.5 x 7 cm). Weight: 7.8 oz (221 g). Package Contents: 1 x M3 screws and nut set. M3 x 5 x 20. Screws M3 x 8 x 20. Screws M3 x 12 x 20 screws. M3 x 14 x 20 x 14 x 20. 3 x 16 x 20 screws M3 x 18 x 20 screws, M3 x 20 screws, M3 x 20 screws, M3 x 160 hex nuts. Note: This is a fine kit, so please store it in a place where children do not touch with them.