Compare Semroc Centering Rings 1/8 inch thick Plywood BTH-52(LT-115)(29mm Motor Tube) to T-2.0"(2pk) SEM-RA-52H-2.0"P Semroc Centering Rings Plywood BTH-52(LT-115)(29mm Motor Tube) to T-2.0"(2pk) RA-52H-2.0"P Lit… Now: $4.19 Add to Cart