Serrated lock washers are Tellerförmige discs for angle grinders in which the middle on the overlapping blade Kreisringförmig is applied. Pack of 20, 80 grain abrasive mop discs, suitable for angle grinders/Diameter: 115 mm, bore diameter: 22.23 mm – Suitable for Sanding Metal and Wood, much higher service life than fibre discs or grinding discs, plates made from glass-fibre reinforced polyester. Flap Discs are particularly suitable for coarse and intermediate sanding. According to all angle grinders without support plate. CAST examples of use are the editing welds, deburring, rust removal and cleaning.