Home Products Power Tool Accessories Masonry Drill Bits Spline 4-Cutter Masonry Drill Bit 3/4″ Cutting Length 17″ Overall Length 22″ Spline 4-Cutter Masonry Drill Bit 3/4″ Cutting Length 17″ Overall Length 22″ (83906) 4 cutter spline 4-cutter tip prevents seizing while drilling in reinforced concrete Crushes 20 times faster than standard masonry drills Find a Retailer