Drill Bit Grinding Machine : 1.easy operate, accurate and fast. 2.With diamond grinding wheel 3.CE Portable Drill ... products' information please browse our website. Technical parameters:Grinding range: Φ8-Φ30mmPoint angle: 85°-140°Power: ... 21, Φ22, Φ23, Φ24, Φ25, Φ26 Apolegamic collets: Φ8, Φ9, Φ10, Φ11, Φ12, Φ27, Φ28, Φ29, Φ30Standard accessory: ... 26Kg Gross weight: 27Kg Drill Bit Grinding Machine