Home Products Power Tool Accessories Masonry Drill Bits Spline 2-Cutter Masonry Drill Bit 7/8″ Cutting Length 17″ Overall Length 22″ Spline 2-Cutter Masonry Drill Bit 7/8″ Cutting Length 17″ Overall Length 22″ (83821) 2 cutter spline Self-centering tip for precise drilling Crushes 20 times faster than standard masonry drills Find a Retailer