Southwire Plastic Handle 5/16-in Keystone Tip ScrewdriverComfortable cushioned grip allows firm grip and greater torque Integral flanges provide a solid, twist resistant blade anchor Chrome plated steel shaft allows for maximum torque with minimal shaft twisting Handle end is marked for easy identification of tip type and size Precision machined tips reduce slipping Features Sub Brand N A Series Name N A Handle Material Plastic Drive Size 5 16 in Drive Type Keystone tip Minimum Shaft Length 6 in Maximum