Home Products Power Tool Accessories Masonry Drill Bits Spline 4-Cutter Masonry Drill Bit 5/8″ Cutting Length 11″ Overall Length 16″ Spline 4-Cutter Masonry Drill Bit 5/8″ Cutting Length 11″ Overall Length 16″ (83901) 4 cutter spline 4-cutter tip prevents seizing while drilling in reinforced concrete Crushes 20 times faster than standard masonry drills Find a Retailer