Zirconia Grinding Wheel 40/60/80/120 Grit T29 And 40 Grit T27 Angle, Piece Set. Product Features ? Extreme Durability and Value - Made of hard zirconia alumina material which lasts longer than standard aluminum oxide abrasive material. These flap discs also feature durable fiberglass backing plates requiring less pressure for heavy stock removal and provides with extra secure safe assurance - absorbing vibrations without smear during usage ? More Emery Cloth - Each flap disc has 80 pieces of emery cloth which is much more efficient than other all 72-piece-emery-cloth abrasive grinding wheels now on the market. It more effectively improves the durability and density of the flap discs. ? 20PCS T29 4PCS T27 - T29 Includes 10pcs 40 grit / 5pcs of 60 grit / 3pcs 80 grit / 2pcs 120 grit, better for frequently contouring, shaping surfaces and more aggressive grinding during projects. T27 includes 4pcs 40 grit as a complement to the project requirements of flat sanding and smoothing. Perfect collocation for all your project needs ? Etched Grit Number and Color Coding - Flap discs with different grits also have different colored label for differentiation. Each abrasive grinding wheel has its own grit number etched on the metal ring for easier identification even if missing label. ? Great Performance - Each 4.5" x 7/8-Inch arbor size flap disc is compatible with angle grinders operatable of up to 13,300 RPM and 80m/s. Ideal for high performance blending and stock removal on metals non-ferrous materials, fiberglass, plastics, woods and other uneven surfaces. Shipping: Shipping is complimentary within the lower 48 US States. We Do Not Ship to PO/APO Boxes, HI or Alaska We Do Not Ship Outside of the Continental US All items ship within 24-72 hours of Payment For large items that require Freight shipping a valid phone number is required to call and schedule your delivery Terms of Sale and Feedback: Feedback is extremely important to us and If you are satisfied with our transaction, please take a moment to leave Positive Feedback. YOUR Satisfaction is our #1 Priority! If there are any issues, PLEASE contact us BEFORE leaving a neutral or negative rating so that we may resolve any concerns. We PROMISE we can make you happy if you give us a fair chance. Returns / Concerns: All items qualify for returns within 14 - 30 days of receipt. Buyer is responsible for return shipping on any item that is not damaged Please be sure this is an item you want before making your purchase. Customer Satisfaction is our TOP priority! All items are IN STOCK at time of listing. Inventory changes constantly and it is impossible to maintain a perfectly accurate count of all items. Please do not penalize us if we have to issue you a refund! Thank You For Your Business!