Williams SDR-30-TH 7/16 X 10 Rd Slot Screw Driver Metal striking cap at top of handle gives ultimate protection during jobs requiring high impact and added force Thru-Blade shank continues through the handle before contacting the metal striking cap for ultimate strength Elastomer surface and double shaped handle for added comfort and maximum turning power Radiate plastic provides high impact resistance to the tool and a perfect joint between the handle and shank Black oxide tips prevent chipping of chrome to reduce possible contamination at work location