BEST FOR: Professional results using detachable blade clippers. Ceramic cutting technology runs cooler, stays sharper longer. Replacement cutter for Andis detachable blade szs: 0A, 1 1A, 1-1/2, 2, 3-1/2,30, 15, 10, 9, 8-1/2, 7FC, 7, 5FC, 5, 4FC, 4, 3-3/4FC, 3-3/4?HT&5/8?HT.