Female Binding Barrel, Finish Plain, Material Stainless Steel, Barrel Head Style Truss, Barrel Drive Type Pin-In Six-Lobe, Thread Size 1/4 In.-20, Barrel Length 1/2 in, Barrel Diameter 5/16 in, Barrel Thread Depth 1/4 in, Screw Length Not Applicable, Barrel Head Diameter 9/16 in, Barrel Head Height 9/64 in, Grip Size 2 in, Made in North America Made in North America, Material Grade/Class 18-8, Material Quality Standards ASTM A582, Pack Size Small