A reaming attachment for 5th position on an Acme Gridley 1-1/4" RB-8 screw machine has four major assemblies:

1 - 5th Position Die Slide Assembly AM-412760
2 - Threading Lever Assembly Rear A-392780
3 - Safety Link Assembly A-41230
4 - Reaming Spindle Assembly B-713610

Below are the individual replacement parts for each assembly that make up a 5th Position Reaming Attachment for an Acme Gridley 1-1/4" RB-8 screw machine: