HD Green Snap Clamp 1/2 Inch X 4 Inches Wide For 1/2 PVC Pipe 10 per Bag ABS clamps have higher temperature resistance and gripping strength Compatible with any type of pipe, including PVC (see description for sizing) Excellent for building greenhouses, row covers, shelters, quilting frames and more Holds material on tubular frame HD snap clamps, for long term use (use EZ clamps for frequent use)