Semroc Plywood Block or Bulkhead for BT-19 tube(2 ring set) SEM-PB-19
Used as lightweight bulkheads for gluing on the end of a BT-19 tube that will be used as a coupler. One ring fits inside the tube and one on top to match the OD of the tube.
Hole for Screw Eye #10(SE-10)
Thickness assembled: 0.25"
Diameter: 0.674" and 0.7"
Made in the USA