... changeable origna GWS20-180 We are professional power tools factory in Qidong city,Jiangsu province,China. Produce Angle Grinder,Electric Drill,Impact ... produce the Motor(Armature,Sattor,Angle grinder gear,Aluminium part). Also,we have Bosch type Angle grinder ,Gws6-100,Gws8-100,Gws8 ... -125,Gws10-125,Gws14-125,Gws15-150;Gws20-180/230,Gws24-180/230, ...