Chauvet DJ CLP-15N 50mm Tube Clamp

Avenger C460-1 Clamp Lp Eye Coupler TUV 220Kg Payload 42-52mm Wide 13mm Unthreaded Hole.

The base model of LP eye coupler is a regular clamp to use on pipes or trusses. Made from aluminium alloy, it can be tightened with a wingnut and has a 13mm hole for mounting lights and other accessories. It can support a payload up to 500kg and works on pipes ranging from 48mm to 52mm

Avenger C210 Clamp Baby Pipe w/ Tommy Bar 10mm to 55mm Range 100Kg Payload

Works on diameters from 10mm to 55mm. It has a 5/8″ mounting stud and a load capacity of 220.46 lb (100 kg). Made of aluminum.