R3™ PLUS patented carbide drill bits are the perfect match for your Ramset™ DynaDrill™ or cordless rotary hammer. Together, they form a powerful concrete drilling system to get the job done faster. R3™ PLUS carbide comprises tough tungsten carbide head design and 4 spiral flutes for faster waste removal and drilling speed. R3™ PLUS Carbide and Chisels fit all SDS Plus machines and previous Ramset™ model 63 Series tools.