"""Litchfield H88.20-LOK HangerLok Self-Locking Pipe ,""" Litchfield HangerLok® Self-locking clic clamp in gray color is made of nylon for added durability. It is suitable for surface mounting for quick and easy installation. It measures 1.160 Inch outer diameter x 1.550 Inch. Clamp supports for all types of wire cable conduit pipe and tube. It features one-piece construction for added convenience. Clamp has a trade size of 0.866 Inch and is ideal for use with 1/2-Inch PVC conduits.