The 3/16" thick by 5/8" wide plated steel bar is bent to a semi-circle, forming a fixed jaw with a maximum height of 7/8".
It is quick and positive to adjust, with serrations that grip the moving jaw to prevent slippage but release it instantly when pressure is removed. The swivel head and jaw face are vinyl capped to prevent marring.
The throat is 2" deep, with an 11/16" wide face and a maximum opening of 8-1/4". Load limit of 330 lb.
Excellent value in a versatile clamp.