The Uniweld 70080 Replacement Blades for 70078 PVC Pipe Cutter are a must-have for anyone who uses a PVC pipe cutter. These blades are made from high-quality steel and are designed to last for a long time. They are also easy to replace, so you can keep your PVC pipe cutter running smoothly and efficiently. The Uniweld 70080 Replacement Blades for 70078 PVC Pipe Cutter are a must-have for anyone who uses a PVC pipe cutter. These blades are made from high-quality steel and are designed to last for a long time. They are also easy to replace, so you can keep your PVC pipe cutter running smoothly and efficiently.