Rub collar for 3/4" Arbor only!, #SC441, (D) diameter: 3, (D) bore: 1/2 & 3/4, (b) Cutting height: 3/4, (r) radius: 1/4, D1: 2-9/32, for material: 3/4", L: 11/32, optional rub collar: c-014, T: 1/4, SC441 2-piece carbide Tipped 3-Wing eased edge stile & rail 3 dia x 3/4 x 1/4 radius x 1/2 & 3/4 bore set for 3/4 material