Tapcon 3/16-in x 7-in Carbide Masonry Drill Bit for Sds-plus DrillThe Tapcon 3 16 in. x 7 in. SDS Drill Bit is engineered for heavy duty use in rotary hammers and drives easily through concrete and masonry. The SDS eliminates slippage, providing for productive, high torque drilling in Concrete and masonry. Seamlessly use Tapcon Drill Bits with Tapcon anchors to ensure drilling precise holes and achieve maximum holding power Used for drilling pilot holes in masonry including concrete, block, and brick For best