Pratt Burnerd 250mm BS 7.5in fully machined backplate
These backplates 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 250mm scroll chucks & 315mm independent chucks.
Register = 200mm
Holes = 7 x M12 on 224mm P.C.D.
Part Number 8271-25203