B-65 Coupling Unit Insert 3.2mm bore. These solid brass inserts are a push fit into the coupling unit and come in different sizes. This unit can be taped to M4....
B-63 Coupling Unit Insert 2.3mm Bore. These solid brass inserts are a push fit into the coupling unit and are in different sizes. This unit can be bored out to...
The B61 universal coupling comes less inserts.(See other listings for inserts).These high quality plastic and brass couplings make for perfect alignment and friction free running.
