Square Drive Extensions, 1/2 in (female square) 1/2 in (male square) drive, 1 23/32 in

Drive extensions from Apex® Fastener Tools have hex tolerances that are on average 48% tighter than DIN and 35% tighter than ANSI requirements. With Apex® Fastener Tools, the industry leader in drive extensions, you are assured of an exact, sure fit. All Apex® drive extensions have the tightest tolerances for straightness and concentricity in the industry.