Ercole M13-011A Half Coupler 42-50mm

This aluminum gravity casting black Barrel Clamp works on diameters from 42mm to 52mm. It holds a payload of 40kg on a 16mm attachment and 600kg on a 28mm attachment. The clamp is TUV SUD certified for maximum security for the user. It features 3 attachments: 5/8” (16 mm) bushing, 1” 1/8 (28 mm) bushing, and a 5/8” (16 mm) spigot. This clamp is extremely strong, featuring a knob locking mechanism for easy operation, and it includes a safety cable.
The C345BK supplied is black in colour

The Avenger C150 Swiveling ”C” Clamp is an extremely robust Gravity Cast clamp that is designed to clamp on to truss, pipe grids or round tubes. It is rated to hold from 10-75 kg/22 lbs-165.3 lbs. (Up to 10KG on the 16 mm/ 5/8 inch retractable spigot and up to 75KG on the Junior 28 mm/1 1/8 inch receiver.) The clamping range on this clamp is 28-78 mm/1.1-3.1 inches. The added swiveling feature allows for easy aiming of any light. The clamp includes a safety cable with pin for the junior pin and an additional thumb screw to securely lock the pin when needed. TÜV SÜD certified. Recommended Accessories: C155, E200, E390, 158, E390, 014-14, 014-38, D200, C888UH, C500, C150.

Avenger C4460-1 Clamp MP Eye Coupler TUV 300Kg 42-52mm Wide 12 5mm Unthreaded Hole.