Fits BT-80 & BTH-80 tube - 2.6" 2.635"

Semroc Centering Rings Fiber BT-20 to BT-80(2pk) SEM-RA-20-80

Semroc Centering Rings Fiber BT-20 to BT-80(2pk)   SEM-RA-20-80 Laser-cut rings for centering a BT-2…

Semroc Centering Rings Plywood ST-9 to BT-80(2pk) SEM-CR-9-80P

Semroc Centering Rings Plywood ST-9 to BT-80(2pk)   SEM-CR-9-80P Laser-cut rings for centering a ST-…

Semroc Centering Rings Fiber ST-9 to BT-80(2pk) SEM-CR-9-80

Semroc Centering Rings Fiber ST-9 to BT-80(2pk)   SEM-CR-9-80 Laser-cut rings for centering an ST-9 …

Semroc Centering Rings Plywood 4xBT-50-BT-80(2pk) SEM-RA-4x50-80P

Semroc Centering Rings Plywood 4xBT-50-BT-80(2pk) RA-4x50-80P  2 pack

Semroc Centering Rings Plywood 3x50-80P(2pk) SEM-RA-3x50-80P

Semroc Centering Rings Plywood 3x50-80P(2pk)  RA-3x50-80P 2 pack