Ideal for lights and other heavy gear on pipes or trusses, the aluminum-constructed C4461-1 TUV Certified Mp Coupler with 1-1/8" Spigot from Avenger can support equipment weighing up to 1,102 lb. The coupler has a gripping range of 1.65 to 2.04" and has a 1-1/8" Junior pin for lights with a matching receiver. TUV is a safety rating such as UL ratings.