B-69 Coupling unit insert M6 Thread. These solid brass inserts are a push fit into the coupling unit and are in different sizes. 

 B-68 Coupling Unit Insert 1/4Unf. These solid brass inserts are a push fit into the coupling unit and are in different sizes. 

B-67 Coupling Unit Insert 6.3mm bore. These solid brass inserts are a push fit into the coupling unit and are in different sizes. 

B-66 Coupling Unit Insert 4.76mm Bore These solid brass inserts are a push fit into the coupling unit and are in different sizes. 

  B-65 Coupling Unit Insert 4.0mm bore These solid brass inserts are a push fit into the coupling unit and are in different sizes.   

B-62 Universal Double Converter. Connects 2 B61 Universal Couplers together.

B-52 540 Motor Mount V Base. Designed to hold the popular electric motors using double sided sponge tape.

B-49 Tapered Drive Dog 3.2mm bore Made of Aluminium and fitted with a M3 socket head screw.

  B-48 Aluminium Drive Dog 3.2mm. These solid brass inserts are a push fit into the coupling unit and are in different sizes.