Rub collar for 1-1/4" Arbor only!, #SC504, (D) diameter: 5-1/2, (D) bore: 1 & 1-1/4, (a°) angle: 17°, (B) Cutting height: 5/8, C: 1/4, optional rub collar: c-017, SC504 carbide Tipped 3-Wing traditional raised panel 17 deg X 5-1/2 dia x 5/8 x 1 & 1-1/4 bore For 3/4 material