The SharkBite PEX Cutter Tool is for cutting 1/2", 3/4", and 1" PEX pipes. It's easy to use - simply push the pipe into the cutting chamber, rotate the cutter in the direction of the arrow, and squeeze the handles to release the pipe. This cutter fits in tight spaces and automatically adjusts to the pipe's size, making it a versatile tool for any plumbing project. It can also cut MDPE Gas Pipe and Conduit, adding to its versatility.