Rocket Tube Coupler Assortment 2 Estes Rockets (US IMPORT)
Couplers are also useful in cutting tubes. Two couplers for BT-55, BT-56, and BT-60 body tubes. One coupler for BT-80 body tube. Spiral wound cardboard: 1 brown, 4 red. Hints on using tube couplers to join two tubes together provided.