Bushing and Key, Mini Lathe 

This lathe bushing and external key mounts the B and C change gears.

The machine bushing is 12 mm OD, 8 mm ID, and 16 mm long. The key is 3 mm x 2.3 mm x 16 mm long. The key is 2.3 mm thick because the keyway in the bushing is shallow.

See Used On tab for reference to machines using this part and the corresponding drawing number.