The Cobra Clip is designed to be used with both IPS and millimeter (mm) dimensioned plastic piping. Good installation of plastic piping is largely dependent on the types of support and pipe clips selected. Clips should not grip the pipe tightly, but allow free axial pipe movement as the pipe expands and contracts. Correctly placed anchors, expansion loops, and free pipe lengths at changes in direction, can then control expansion, thereby avoiding unsightly pipe snaking. The cobra clip allows this free pipe movement by minimizing friction between pipe and clip. To install, locate and insert the pipe in the open cobra clip until it seats on the open jaws. Snap in by applying slight pressure and force jaws to close and lock. Retain by fitting the retaining strap on clip sizes 1 inch and above.