The pro-grade Mini C-Clamp is ideal for use with truss or pipe which has an outer diameter of 1.4 inches (35mm) to 2.4 inches (60mm). Installation of lighting fixtures or key effects is a breeze, simply connect your light fixture or effect to the clamp then place the clamp in the desired location on trussing or pipe and securely tighten down via a large wing-type grip handle. Ideal for mobile DJs, light riggers, or theater stagehands.