The set of 5 Fillet weld discs MSW-DISC-900 by MSW has been specifically designed for professionals in the metalwork trade for use with the MSW-FIL900S Fillet weld grinder. As these discs are original MSW accessories, substituting them is pretty easy and takes a matter of seconds. MSW-DISC-900 Fillet weld discs can of course be used on other fillet welding machines, as long as they have a 25.4 mm (1”) diameter. The fillet weld disc is 150 x 5 mm and is particularly suitable for grinding, polishing and cleaning stainless steel and other suitable materials.