Zirconia Flap Disc 10 Pack 4-1/2"×7/8" 120 Grit Premium T29 Sanding Grinding 40 Grit Flap Disc 4-1 2 Inch Pearl EXV HIGH DENSITY 4-1/2" x 7/8" Zirconia T27 Flap Disc - 40GRIT (Pack of 10 Designed to minimize fatigue by operating with less vibration and noise. Type 29 flap discs have an angled or pitched surface. This warranty does not cover any product that has been subject to misuse, neglect, negligence or accident, or that has been used in any way contrary to the purpose intended. Strong poly/cotton backing to extend the life of the disc Norton 77696090086 4-1/2x5/8-11 BlueFire R884P Zirconia Alumina Plus High Density Type 27 Flap Discs 40 Grit Coarse 10 Pack It is cool cutting and resistant to heat and moisture. Ideal for all-purpose sanding and grinding. Continental Abrasives High-Density Zirconia Flap Disc is used for finishing, deburring, and grinding. It is ideal when working on uneven or curved surfaces Made with a strong poly/cotton backing to extend the life of the disc. This flap disc will last 6 times longer than a zirconia flap disc and up to 10 times longer than an aluminum oxide flap disc. Mercer, formerly known as Mercer Abrasives, is committed to serving its customers and providing quality products. Proof of purchase required. Type 29, 4-1/2-Inch x 7/8-Inch, Grit 120, 10pk Claims for warranty must be made within 90 days of the date of purchase. For more information, visit mercer industries dot com. Does the job of a grinding wheel and a fiber disc. Mercer Industries is a 3rd generation family owned company that was built on core values of Quality, Performance, Delivery, Service, and Price.