8 Pack 18mm Centering Rings for BT-56

• for 18mm (for most A,B, and C engines ) to BT56 body tubes
• 8 paper mounting rings rings
• item # 05 068

These are centering rings only for the BT56 body tube.  For complete mounting kits, see:
http://www.sunward1.com/bt56-mounting-kits