Semroc Centering Ring Wound Craft Paper BT-20 to BT-50-1/4"(1pk)(same AR-2050) SEM-CR-20-50-1/4
Functions as an Engine Block for a BT-50 Tube(EB-50)
1 pack
ID= 0.738"
OD= 0.948"
1/4" thick wound craft construction
Made in the USA
Semroc Centering Ring Wound Craft Paper BT-20 to BT-50(1pk)(same CR-20-50-1/4) SEM-AR-2050 Wound craft paper rings for centering a BT-20 motor tube inside a BT-50 tube
Semroc Centering Ring Wound Craft Paper BT-20 to BT-50 Slotted(1pk) SEM-AR-2050S Wound Paper ring for centering a BT-20 tube inside a BT-50 tube
Semroc Centering Ring Wound Craft Paper BT-20 to BT-50(1pk) SEM-CR-20-50-1/8
Semroc Centering Ring Wound Craft Paper BT-2 to BT-4(1pk) SEM-CR-2-4 1 pack ID= 0.281"
Semroc Centering Ring Wound Craft Paper BT-20 to BT-50(1pk)(same CR-20-50-1/4) SEM-AR-2050 Wou…
Semroc Centering Ring Wound Craft Paper BT-20 to BT-50 Slotted(1pk) SEM-AR-2050S Wound Paper r…
Semroc Centering Ring Wound Craft Paper BT-20 to BT-50(1pk) SEM-CR-20-50-1/8
Semroc Centering Ring Wound Craft Paper BT-2 to BT-4(1pk) SEM-CR-2-4 1 pack ID= 0.281"
