... sheet metal solder joint, Burr,mold restoring and grinding other metals,rubber, resin and glass. Pneumatic Saw File MachinePurposes:Clearing ... sheet metal solder joint,Burr,mold restoring and grinding other metals,rubber, resin and glass.1.Speed:3400RPM2.Stroke:5mm3. ... CO.,LTD. Is a Sino-foreign joint ventures .The company specializes in manufacturing various kinds of pneumatic Tools, gun accessories ...