Set Includes: 5/16 x 3/8", 7/16 x 1/2", 9/16 x 5/8", 11/16 x 3/4", 7/8 x15/16"
Chrome Vanadium Steel (Cr-V) for high strength & durability
SP box ring end wrenches feature a deeper flat drive ring making them the perfect wrench for getting to and loosening those tricky, hard-to-reach, often worn fasteners by increasing the contact area with the nut or bolt head. More contact means greater applied torque
Flat Drive Technology: Perfectly flat wrench head surfaces allow for maximum contact between the wrench and the bolt or nut, maximizing grip and enhancing applied torque