About This LONGEST LASTING:Cut off wheels feature metal center and ultra-thin 0.040" thickness.100 pieces cutting disc for metal & stainless steel meet ANSI safety requirements.Grinder Wheel Dimensions:4 1/2"x0.040"x7/8" PERFECT ALUMINUM:4 1/2 cut off wheel is made with a proprietary combination of alumina particles for aggressive cutting action, providing the industry's best balance of cut life, cut rate, cut accuracy, power requirements and heat build-up, to give you unmatched cut time, consistent precise integrity, moderate power requirements and relatively low heat build-up FITS ANY ANGLE GRINDER:100 PCS cut-off wheels for metal & stainless steel fast burr-free cutting feature 4 1/2"x0.040"x7/8", compatible with Die Grinder, Air Cut Off Tool and Electric Cut Off Tool MULTIPLE UESES:Cut off wheels 4 1/2 inch are designed for cutting fiberglass,steel,iron,plastic,stainless steel including rebar, steel pipe,structural & galvanized steel,sheet metal,structural tubing,black steel ,and other ferrous metals Attention Please:Cutting disc is made in accordance.Before using these,please wear all applicable safety gear when using these discs (eyes/ears/face/hands/body/etc) Overview Grit Material : Aluminum Oxide Product Dimensions : 4.5"L x 4.5"W Brand : S SATC Compatible Devices : Angle Grinder, Die Grinder Grit Type : Medium