Semroc Centering Rings Fiber BT-55 to BT-58(2pk) SEM-RA-55-58
Featherweight laser-cut fiber rings which center a BT-55 tube inside a BT-58 tube
ID= 1.325"
OD= 1.498"
Fiber thickness is 0.050"
Warranty for 1 year from manufacturer defects
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