1)brass carbon brush box 2)CNC,CMM 3)ISO9001:2000 ... ,ERP management 4)weight:5g-20kg,dimension:5x5-200x200mm 5)Ten-year OEM brass ... investment casting carbon brush box MaterialsCopper alloy, bronze, brass, other materials can according ... you.Material and Equipments:Material:various kinds of brass,bronze and other copper alloys,for example ...