Promac PK-1 1/2 GRM KV Manual Promac "Promill" PK-1 1/2 GRM KV Turret milling machine (Bridgeport copy). Operation, Maintenance and a Parts Manual as Exploded Component Drawings. Manufacturers: Bridgeport Promac Promill Models: GRM KV PK-1 Contents: Operators Manual Maintenance Manual Parts Manual