Semroc Centering Rings Plywood BTH-50 to BT-60(2pk) RA-50H-60P
2 pack
ID= 0.95"
OD= 1.60"
0.125" Thick Plywood
Specially for:
mf = metal foil interlined tube
The mf tube is larger than a standard T-50 tube and requires special 50H sized centering rings