Coupler Tubes for 54mm, 3.0 & 3.9

Coupler tubes are XX Phenolic, with a machined OD.  They have a wall thickness of .075" and are extremely strong.

54mm x 7" long -- $11.00
3.0 x 8" long -- $12.50
3.9 x 10" long -- $15.00

Note:  Coupler tubes are sized to fit our canvas phenolic airframes.