Ilco 23RF key machine cutter. 2 1/4" diameter with 1/2" hole diameter. High speed fine milling cutter fits Ilco 008, 008A, 008B, 2184CD, H2584CV, 2585DU, 190; Dominion 145, 145M 147, 149M; HPC 9100, 9110; Taylor KD1, KD5, KD20; Keil 4-1/2, 12-1/2, 13-1/2, 15; and Curtis 2000 key machines.