Knott Avonride KRV30 Pole coupling, 3000 kg., 100mm. box
Knott Avonride KRV13 (KRV30Z) Pole coupling, 1600-3000 kg. capacity for use with 100mm. wide drawbar box section. Fitted with cast coupling head, complete with lock, and a jockey wheel cast clamp for 48mm. dia. jockey wheels.