Semroc Plywood Bulkhead or Block for BT-80 tube(2 ring set) SEM-PB-80
Plywood Blocks are used as lightweight bulkheads for gluing on the end of a JT-80 coupler, inside and outside
Hole for Screw Eye #10(SE-10)
Plywood Thickness is 0.25" after assembly
Diameter = 2.558"
Diameter= 2.498" to fit inside a JT-80 Coupler
Made in the USA
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