Semroc Centering Rings Plywood BT-20 to BT-55(2pk) SEM-RA-20-55P
Laser-cut rings for centering a BT-20 tube inside a BT-55 tube
0.125" thick
I.D = 0.736
O.D = 1.283
Made in the USA
Warranty for 1 year from manufacturer defects
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