Semroc Centering Rings Fiber BT-55 to BT-70(2pk) SEM-RA-55-70
Featherweight laser-cut fiber rings which center a BT-55 tube inside a BT-70 tube.
Thickness is 0.05"
ID= 1.325"
OD= 2.175"
Warranty for 1 year from manufacturer defects
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