Durable ABS plastic clamp snaps easily over 1" electrical conduit (EMT) or 3/4" PVC pipe to secure row covers in place. UV-stabilized and frost-resistant to provide many years of dependable use. Can be used to make Coleman-designed Scissor Doors for your Quick Hoops™ high tunnel and to secure greenhouse plastic to roll-up sides. Add a self-drilling tek screw for permanent installation. 4" long. Internal diameter: 0.90" (23 mm). NOTE: Clamp size is based on the outside diameter of the pipe on which it clips. May lose gripping strength at temperatures above 140°F (60°C). Pack of 10.