Specification:

Size: 4''

Opening Capacity：4-1/2"

Throat：2-7/8"

Screw Dia：1-8''

Clamping force ranging up to  20,000 pounds;

Package included:

1*C-Clamp;

Feature:

1. The product is machined from heavy duty steel, quenched and tempered for high hardness, and the surface is treated with a black oxide coating that protects against rust and corrosion, which greatly improves the service life of the product.

2. The square spindle head can withstand the tightening of heavy-duty spanners, including hand wrenches and torque spanners

3. The C-jig is of high quality and well made, ideal for heavy construction, bridge building, heavy machining and shipbuilding.;