Rub collar for 3/4" Arbor only, #966, (D) diameter 3.000, (D) bore 1/2 & 3/4, (b) Cutting height 1-3/4, Description molding, R1 5/32, optional rub collar c-010, R2 1/4, 966 carbide Tipped 3-Wing molding 1/8 x 5/32 x 1/4 radius x 3 dia x 1-3/4 x 1/2 & 3/4 bore