Cable Guard Features: Snap-in and self clamping styles. Keeps power cable from abrading against well casing. A minimum of three to five should be used; one at the pump, one no further than 15’ above the pump, and one between 25’ and 30’ above the pump. Adjustable - use in 4”, 5” and 6” wells. Available for 1” or 1 1/4” drop pipe. Made of polyethylene and will float.