API AC101P4-LDTT150P Mounting Clamps & Topper Tape for Truck Caps / Camper Shells (Set of 4) Set of 4 clamps & 1 roll of Topper Tape designed to mount truck caps on many pick-up truck models Constructed of tempered aluminum with a Mill Finish Complete installation guide A = 1" B = 1 1/2" C = 0" - 7/8" (See technical drawing above) Made in the USA