Parker 51 Vacumatic Feeds + Tubes

Vacumatic Feed: Standard Size, Original Parker Parts. (except for some very rare early versions that had no channel running the length of the top. The front, flat, pointed part of these early ones are much thinner (depth of the flat part), .06" in the early ones as opposed to .1" on the later ones. I don't have any of the early ones for sale)

Vacumatic Tube: Original Parker Part. PARKER USED A ZILLION DIFFERENT LENGTHS OF FILL TUBES.
110 SAMPLES OF PARKER VAC FILL TUBE LENGTHS WERE OBTAINED FROM PARTS DRAWERS IN 2 FORMER PEN SHOPS IN SOUTHERN CALIFORNIA AND SORTED ACCORDING TO LENGTH. 
We have sorted them and provide them in 3 length ranges:
Vac Fill Tube A: LONG length range 1.556 - 1.597 inch
Vac Fill Tube B: MIDDLE length range  1.130 - 1.245 inch 
Vac Fill Tube C:  SHORT length range 0.830 - 0.867 inch

Fill Tube By The Foot: FLEXIBLE FILL TUBES FITTING VACUMATIC AND SKYLINE FEEDS.  Order it by the foot. I find that holes in the backs of feeds vary from feed to feed; if you need to make this tubing thinner, hold it over a heat source and stretch it and it will get thinner. You can then cut it at the desired diameter.