The Trusst CTC-50HC Black is a load-rated full-size half-coupler made from heavy-duty aluminum. Due to the construction material, it allows for a load rating of 750kgs.
$79.00
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.
Avenger C461-1 Eye Coupler LP 28mm TV Spigot Range 48-52mm 220kg Payload Alum Alloy Spigot 28mm.
The Avenger C345K-1 Barrel Clamp in silver is made with gravity cast aluminum, has a built in 28 mm/ 1 1/8 inch junior receiver, a 16 mm/ 5/8 inch baby pin with a 1/4” threaded top and a 16 mm/5/8 inch receiver. This barrel clamp is capable of mounting pipes or tubes ranging from 42 – 52 mm/1.65 – 2.05 inch and easily locks into place using a T-Knob. The baby attachment can support loads up to 40 kg while the junior receiver can take capacities up to 300 kg/661.4 lb. The C345K-1 includes a safety cable with locking pin to secure attachments that are mounted in the junior receiver. TÜV SÜD certified. Recommended Accessories: C155, C155-01, C155-02 E200, FF3276, A2029, C590, C626.
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.
Avenger C462-1 Eye Coupler LP w 16mm Spigot Range 48-52mm 500kg Payload 
Ercole M13-066 Half Coupler 40-50mm with eye bolt 