Mt end mill holder-drawbar end type Drawbar end thread: MT2:3/8"-16, MT3:1/2"-13, MT4:5/8"-11,MT5:3/4"-10,MT6"1"-8 For single & double end mills (For single end mills only) Shank TaperHole Dia.Model No.MT23/16"219-2112MT21/4"219-2113MT25/16"219-2114MT23/8"219-2115MT21/2"219-2116MT25/8"219-2117MT23/4"219-2118MT33/16"219-3112MT31/4"219-3113MT35/16"219-3114MT33/8"219-3115MT31/2"219-3116MT35/8"219-3117MT33/4"219-3118MT37/8"219-3119MT31"219-3120MT43/8"219-4115MT41/2"219-4116MT45/8"219-4117MT43/4"219-4118MT47/8"219-4119MT41"219-4120MT41-1/4"219-4121MT41-1/2"219-4122MT53/8"219-5115MT51/2"219-5116MT55/8"219-5117MT53/4"219-5118MT57/8"219-5119MT51"219-5120MT51-1/4"219-5121MT51-1/2"219-5122MT52"219-5124MT63/8"219-6115MT61/2"219-6116MT65/8"219-6117MT63/4"219-6118MT67/8"219-6119MT61"219-6120MT61-1/4"219-6121MT61-1/2"219-6122MT62"219-6124MT62-1/2"219-6126