For chiseling or smoothing welds, castings and other materials. Never skip a blow, cleans and descales all jobs fast. Jet chisel needles adjust to the contour of any surface automatically. The chisel can reach into corners, curvatures, and uneven surfaces, making it a tool no shop should be without. Thanks to the unprecedented original air operated needle return mechanism, no springs to break, no irregular power and the advantage of low air consumption. A normal short hose and quick coupler are attached as standard accessories.