With this three-piece Milwaukee 48224257 replacement blade pack, you instantly restore the sharp performance of your reaming pen or compatible tubing cutter. After cutting copper or plastic pipes, you cleanly slice away internal burrs and rough edges with minimal effort. This protects seals and fittings during pipe assembly while ensuring smooth, consistent flow through your installations. Precision-machined, heat-treated and finished with a durable black oxide coating, these blades withstand demanding wear on plumbing and heating jobs. With 3 blades in the pack, you keep your essential deburring tools ready for work.