The Avenger C465-1 LP Eye Coupler grid clamp comes supplied with a 28 mm(1 1/8\") junior receiver. This popular clamp is ideal for many rigging systems, truss and entertainment configurations. The LP Eye Coupler uses a wing nut with washer locking design and is able to clamp down on round tubes, truss or grids ranging from 48 mm(1.9\") to 52 mm(2.04\") and is 50 mm(1.96\") wide. Capable of holding up to 300 kg/661.4 lb loads this clamp will perform in many demanding environments. TÜV and SÜD certified. Recommended Accessories: E390, C155, C460-1, C461-1, C463-1, C4460-1, C464-1, E200, C4465-1