500mm A2-11 Fully Machined Backplate
These backplate are fully machined to suit Pratt Burnerd 3 & 4 jaw chucks and may be used on other chucks with the same register & mounting holes.
To suit Pratt Burnerd 500mm scroll chucks.
Register = 420mm
Holes = 7 x M16 on 458mm P.C.D.
Part Number 8271-50227