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. 

B-33  Shaft/Tube 200mm x3mm xM3. Comes with drive dog, nut & washer.