Portabroca R8 bridgeport con cono B18 y filete 7/16" UNF. R8 bridgeport attacco per mandrino con B18 cone e 7/16" UNF. Tightening thread: 7/16"-20 UNF. Tool shank: Bridgeport. M14 thread quick change locking nut for angle grinder.
eBay