Order total linear inches, specify cut lengths in the checkout notes. On the "My Cart" page, you may add any desired notes by clicking "Add a note" located below the items in the cart. 
 
Price is by the inch - maximum length of 48 inches
 
There is a +/- .3mm or 0.012 in margin on all sizing 
 
Filament wound fiberglass coupler made to fit Mach 1 tubing.
 
Coupler Tube Sizing: 
 
Coupler
ID
OD
BT20
(18 mm)
16.5 mm
(0.650 in)
17.8 mm
(0.701 in)
 
 
 
BT50
(24 mm)
22.5 mm
(0.886 in)
23.8 mm
(0.937 in)
 
 
 
BT55
(33 mm)
31.5 mm
(1.240 in)
32.5 mm
(1.280 in)
 
 
 
BT60
(40 mm)
38.5 mm
(1.516 in)
40.2 mm
(1.583 in)
 
 
 
54 mm
(2.2 in)
52.5 mm
(2.067 in)
54.2 mm
(2.134 in)
 
 
 
65 mm
(2.6 in)
63.0 mm
(2.480 in)
64.7mm
(2.547 in)
 
 
 
76 mm
(3 in)
73.0 mm
(2.874 in)
76.1 mm
(2.996 in)
 
 
 
98 mm        
(4 in)
96.0 mm
(3.780 in)        
98.7 mm
(3.886 in)