This 10″ C  Clamp is made for clamping onto support beams, I-Beams, crossbars or hard to attach to shapes. It is designed for mounting fixtures that mount to Junior (Female) receptors.
It has two 1-1/8″ (28 mm) Female receivers with safety chain and cotter pin.

Specs:

• Max Width of Jaws 9.5″ (24cm)
• 2 x 1-1/8″ (28mm) Receivers