... . 3.CE Drill bit grinder Mr-26A Portable idiot drill grinder, twist drill grinder, Universal small drill grinder, universal big drill grinder, universal precision drill ... , Φ16, Φ17, Φ18, Φ19, Φ20, Φ21, Φ22, Φ23, Φ24, Φ25, Φ26 Apolegamic collets: Φ8, Φ9, Φ10, Φ11, Φ12, Φ27, Φ28, Φ29 ... weight: 26Kg Gross weight: 27Kg Operation: Portable Idiot Drill Bit Grinder (8~30mm)