About This MATERIAL: Cutting wheel is crafted by selected Aluminum Oxide which features sharpness, wear-resistance, high hardness and thermal conductivity, reaching the industry's best balance of cut life, cut rate, cut accuracy, power requirements and heat build-up PERFORMANCE: Cutting disc will satisfy you with its unmatched cut times, precise integrity, relatively low heat build-up, owing to the premium raw material and the double reinforced mesh construct design USAGE: Grinder cutting wheel is perfectly compatible with all 4-1/2 inch angle grinders with 7/8-inch arbor, air and elextric cut off tool for metal & stainless steel fast burr-free cutting,operating up to max.13,300 RPM and 80M/S DETAILS: 50 Pack cutoff wheel in total, measured 4-1/2" x .045" x 7/8". ATTENTION! Please wear all applicable safety gear when using these discs (eyes/ears/face/hands/body/etc) SERIVCE: MIDO Professional Abrasive is committed to providing the highest quality products and the most attentive service and you are always welcomed to reach out to us for any after-sale service Overview Grit Material : Aluminum Oxide Product Dimensions : 4.5"L x 4.5"W Brand : MIDO Professional Abrasive Compatible Devices : Angle Grinder Grit Type : Coarse