Rub collar for 1-1/4" Arbor only!, #SC502, (D) diameter: 5-1/2, (D) bore: 1 & 1-1/4, (B) Cutting height: 5/8, (r) radius: 1-15/32, C: 5/16, R1: 1/8, optional rub collar: c-017, R2: 7/8, SC502 carbide Tipped 3-Wing Ogee raised panel 5-1/2 dia x 5/8 x 1 & 1-1/4 bore For 3/4 material