The OSK-60mm Normal Knob is a 60mm brass euro-profile mortice cylinder with a thumb-turn knob on one side and a key on the other. The knob lets the door be locked and unlocked by hand from the inside, while the keyway serves the outer face. It has a polished gold-tone brass finish, a flat oval knob, a black centre cam and a fixing-screw hole in the lower body. It belongs to a brass range of cylinders sized 60mm to 100mm. Catalogue code: 37522 Part numbers: OSK-60mm