40PCS 4-1/2" x 7/8" Zirconia Flap Discs Angle Grinder Sanding Grinding Wheels 20PCS X 40 Grit, 10PCS X 60 Grit, 6PCS X 80 Grit, 4PCS X 120 Grit
Features 
- Self-Sharpening
- Fast Cut Rate
- Extended Lifespan
- Operator Comfort
- Safety Guaranteed
- More Cutting Power than Aluminum Oxide Discs
- For Heavy Stock Removal and Aggressive Grinding
About the Structure of Flap Discs: 72pcs small 24x18mm cloth backing sanding discs are bonded tightly on the plate. The plate is constructed from 8 layers of fiberglass mesh and one layer of non-woven cloth. Metal rings are embedded on 2 sides.
Self-Fracturing Zirconia Alumina Material: Premium zirconia alumina fractures frequently to continually produce fresh sharp points and deliver a faster cut-rate than aluminum oxide. Developed for heavy stock removal and high pressure grinding.
Strong X-Weight Polyester Cotton Backing of Small Discs: Offering flexibility and well-suited for handling sharp edges and medium to high pressure applications
Resin over Resin Bonding: High strength resin bond system provides superior grain support, resist heat and humidity for longer life than usual resin over glue bond.
Fiberglass Backing Plate: High quality special structure of 8-layer fiberglass mesh screen. Features extra strength, light weight, ability to absorb vibration, and operator comfort
More Resin Adhesive Added: Resin adhesive features heat resistance. More adhesive added to bond the small discs to the plate tightly to resist discs flying off when operating which helps achieving longer lifespan and ensuring security
Type 29 Shape: Best used at a 15~25 angle. Better for contouring and shaping surfaces, capable of more aggressive grinding than Type 27
Grit: 20PCS x 40 grit, 10PCS x 60 grit, 6PCS x 80 grit, 4PCS x 120 grit
Color: Blue
Dimension: 4.5 in
Arbor Hole: 7/8 in
Abrasive Material: Zirconia Alumina
Coat Type: Closed Coat
Backing Material: X-Weight Polyester Cotten
Plate Material: Fiberglass
Bond: Resin over Resin
MAX OPERATING SPEED RPM: 13,300
Application: Contouring and Shaping surfaces, Heavy Stock Removal, Aggressive Grinding
Machines: Right Angle Grinder
Grit: 40/60/80/120
Grade: Extra Coarse/Coarse/Coarse/Medium
Package Included:
20pcs x 4.5 in Flap Discs Grit 40
10pcs x 4.5 in Flap Discs Grit 60
6pcs x 4.5 in Flap Discs Grit 80
4pcs x 4.5 in Flap Discs Grit 120
20 pieces in total
SHIPPED SAME-DAY FROM HOUSTON OR CHINO VIA USPS PRIORITY MAIL, UPS GROUND, OR USPS SUREPOST.