HYDRA-STOP CUTTERS DIAMOND RETIPPING MUELLER THREADED TAPPING BITS MUELLER SHELL CUTTERS SALES & SHARPENING SERVICES Mueller Shell Cutters: Tip Replacement: Getting broken tips replaced will give you maximum performance. Hydrastop / Relton Cutter: Multi tooth cutters perform better when all teeth are cutting. Pilot Bits It is important to keep pilot bits sharp and in good condition. Contact us: 407-508-1063