●● 3/Size (mm): 9 Total Length (L; mm): 64 ● bayonet (” SQ.) 8 socket Socket Outer Diameter: outside diameter (D1 point; mm): 13 ● socket (D2 bayonet; mm): 17 ● Depth (E; mm): 28 ●● The plating of the mirror finish Beautiful dyi-pusoketto. ● The through the nut and bolt, with recesses in the for your work. ● Bolt/Nut a damage resistant surface contact type. ● 6 Square Type