Rub collar for 3/4" Arbor only!, #SC403, (D) diameter: 4-5/8, (D) bore: 1/2 & 3/4, (b) Cutting height: 11/16, (r) radius: 7/8, B1: 9/32, C: 1-1/2, Optional rub collar: c-005, SC403 carbide Tipped 3-wing Ogee raised panel 4-5/8 DIA x 11/16 x 1/2 & 3/4 Bore For 11/16 material