Carriage Bolt Assortment Metal Box Container Material Metal Steel Zinc Plated Screws/Bolts Included Carriage Bolts (25) 1/4 In.-20x3/4 in (25) 1/4 In.-20x1 in (25) 1/4 In.-20x1 1/4 in (25) 1/4 In.-20x1 1/2 in (25) 1/4 In.-20x2 in (25) 5/16 In.-18x1 in (20) 5/16 In.-18x2 in (15) 5/16 In.-18x2 1/2 in (10) 5/16 In.-18x3 in (20) 3/8 In.-16x1 in (15) 3/8 In.-16x2 in (10) 3/8 In.-16x2 1/2 in (10) 3/8 In.-16x3 in Number of Sizes 16 Round