The Avenger C345BK-1 Barrel Clamp in black is made with gravity cast aluminium, 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/88.2 lb while the junior receiver can take capacities up to 300 kg/661.4 lb. The C345-1 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, C590