Rub collar for 1-1/4" Arbor only, #931, (D) diameter: 5-1/2, (D) bore: 1 & 1-1/4, (a°) angle: 5°, (B) Cutting height: 5/8, (r) radius: 5/32, B1: 3/8, C: 1-1/2, Optional rub collar: c-017, 931 carbide Tipped traditional with radius raised panel 5 deg x 5/32 radius x 5-1/2 DIA x 5/8 x 1 & 1-1/4 bore For 5/8 material