Home Products Power Tool Accessories Masonry Drill Bits Spline 4-Cutter Masonry Drill Bit 3/4″ Cutting Length 11″ Overall Length 16″ Spline 4-Cutter Masonry Drill Bit 3/4″ Cutting Length 11″ Overall Length 16″ (83905) 4 cutter spline 4-cutter tip prevents seizing while drilling in reinforced concrete Crushes 20 times faster than standard masonry drills Find a Retailer