Rub collar for 1-1/4" Arbor only, #986, (D) diameter 5-1/2, (D) bore 1 & 1-1/4, (a°) angle 12°, (B) Cutting, height 11/16, (r) radius 1/8, B1 11/32, C 1-1/2, Optional rub collar c-017, 986 carbide Tipped 3-wing classical raised panel 5-1/2 DIA x 11/16 x 1 & 1-1/4 bore For 11/16 material.