Female Binding Barrel, Finish Plain, Material Stainless Steel, Barrel Head Style Button, Barrel Drive Type Internal Hex, Thread Size 1/2 In.-13, Barrel Length 2 in, Barrel Diameter 5/8 in, Barrel Thread Depth 5/8 in, Screw Length Not Applicable, Barrel Drive Size 3/8 in, Barrel Head Diameter 1 in, Barrel Head Height 5/16 in, Dimensional Standards AMPG 2000 SB.05, Grip Size 2 in, Made in North America Made in North America, Material Grade/Class 18-8, Material Quality Standards ASTM A582