API - 4 Rocker Style Long Reach Ford Truck Cap Mounting Clamps (AC1031-4)
This is a set of 4 low profile cap clamps for truck caps.
These work great for vehicles with with bed rails such as 1997 to current model Fords trucks.
These are manufactured by API.
Maximum opening is 7/8".
A - 1"
B - 2-1/4"
C - 0 to 7/8"