35mm Backset - See Images;92PZ Measurement - See Images;Genuine ERA Replacement Gearbox with hookbolt;If your existing gearbox has a hookbolt this is a direct replacement

• Era, Saracen, Surelock, Laird replacement gearbox with Hookbolt

Era, Saracen, Surelock, Laird replacement gearbox with HookboltERA