The Motor Guard MS-1-KIT is a plastic repair adapter for your stud welder. The Magna-Stitcher from Motor Guard provides an economical solution for plastic repair by turning your stud welder into a plastic repair tool. The Magna Stitcher fits all popular stud welders and provides all the features of a plastic repair system at a fraction of the cost. The Magna Stitcher can be used to repair Bumpers, Fascias, Spoilers, Headlamp Frames, Interior Molding, Radiator Brackets and any thermoplastic part. The MS-1 works by inserting a rigid stainless steel stake into the surface of the plastic resulting in a permanent repair of the crack. Repairs can be made on flat surfaces, tabs, holes, ribs, inside and outside corners. Once the back of the broken part is stitched, body repair can be completed on the outside of the part as needed. Made in USA.