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4-1/2" x 5/8"-11 T27 Zirconia High Density Trimmable Flap Disc - 1 Piece

Original price $0.00 - Original price $0.00
Original price $0.00
$3.99 - $3.99
Current price $3.99

Product Specification


4-1/2" x 5/8"-11 T27 (Flat Face) Zirconia High Density Flap Discs are manufactured using European zirconia cloth. The European material is superior due to its uniform particle size and premium blend of ingredients. These discs exceed our other flap discs by packing 40% more abrasives on each snippet than our regular density discs. In addition, all discs are manufactured on computer-controlled machines and subject to numerous tests which ensure high quality and greater safety.  The 5/8”-11 hub allows for easy spin-on spin-off action.

The trimmable backing allows for maximum use of all flaps on each disc. The plastic trimmable backer on these flap discs enables you to use up more flaps, significantly extending each disc's service life. Thus flap discs assure consistent performance as new particles are continually exposed during the product's life and offer a better-finished surface. It can be used for grinding, deburring, edge chamfering, blending & finishing.

T27 (flat face) discs are perfect for grinding down items that are not flat surfaces (like fence posts, gates, and risers etc).  For the best solution on flat surfaced check out our T29 (angled face) flap discs.

Zirconia grains have a self-sharpening property and stand up to higher heat and pressure than Aluminum Oxide (A/O), thus making Zirconia the go-to option, providing excellent stock removal that gives you more bang for your buck.

Quantity: 1 piece


  • Outer Diameter – 4-1/2” 
  • Inner Diameter – 5/8”-11 (flange or hub)
  • Shape – T27 Flat Face
  • Thickness – 1/2" High Density (Jumbo) 
  • Grain – Zirconia (Zirc)
  • Available Grits –40, 60, 80, 120
  • Backing – X-weight polycotton cloth
  • Max RPM – 13,300 

Machines Used On:

  • Angle Grinders sized 4-1/2” to 5“.


  • Ferrous Materials – Cast Iron, Steel, Stainless, Steel, Titanium, Nickel, Wrought Iron
  • Non-Ferrous Materials - Copper
  • Other Materials – Fiberglass, Plastic, Hard Rubber, Wood, Stone
  • Dry use ONLY

Safety Tips & Techniques:

  • This flap disc can be trimmed back to expose more flap area, thus extending the life of the product
  • For less stock removal try using a lighter touch or a feathered approach to your grinding.  Flap discs are like grinding wheels with power steering!
  • Always wear proper PPE to include (but not limited to) safety glasses, hearing protection, respirator, and hand protection.  Keep all guards in place on your machine.



You read that right, Free shipping on orders over $100 + Orders placed before 12 noon PST = SHIP SAME DAY! Orders placed after noon will ship the following day.

Standard FREE shipping is UPS Ground or USPS priority depending on size and weight. Most customers receive their order within 3-5 days from date of purchase. Faster shipping options available for additional charge. Free shipping not available on international orders. Free shipping will only be available to orders being delivered within the lower 48 states.


Not happy with your product? Welcome to hassle free returns. Just shoot us an email, call the toll free number or click the chat button below. One of our helpful employees will get you set up with an RGA and return shipping info.

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