1. Foursided square insert: The carbide insert provides four cutting edges. You can rotate it 90 degrees before use to access cutting edges. The cutting efficiency is higher and faster. It can easily ream out broken pipes, creating an incredibly smooth channel. 2. Easy to use: Simply select the fitting saver in the correct size, insert it into the drill chuck, and tighten. Guide the fitting reamer into the center of the broken pipe and ream out the old pipe until the desired depth is reached. 3. Aircraftgrade aluminum material: The PVC reamer is made of the latest hardness alloy, ensuring precision, durability, and a long service life. The coated surface undergoes antirust treatment, making it waterproof and ideal for longterm plumbing repairs. 4. Wide application: The PVC fitting saver helps save time and money. It is for vent lines, drain lines, and water lines and is used to clean internal and external burrs, sharp edges, and solvent cement residue on PVC, CPVC, and ABS pipe fittings.