Marine Pneumatic Angle Grinders 4 inch 100mm 1.With black cover, the waste residue produced when grinding is avoided effectively. 2.With PVC handle, you can use both hands to improve the stability of use. 3.Remove the fixed screws, you can achieve a multi-purpose effect, you can install other disk use. 4.Can be widely used in automobile motorcycle, shipbuilding, boiler, casting, machinery manufacturing and other industries, deburring, descaling, grinding welds and sanding operation.