API KH1 Mounting Clamp for Truck Caps / Camper Shells (1 Clamp) General purpose clamp designed to mount truck caps on many pick-up truck models Constructed of tempered aluminum with a Mill Finish Complete installation guide A = 1 1/8" B = 1 5/8" C = 0" - 1 3/8" (See technical drawing above) Made in the USA