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Type A – Aluminum Oxide

KGS Semi Flexible Aluminum Oxide disc for metal work with angle grinders. Applications include aggressive grinding, leveling and cleaning of surface imperfections in iron, stainless steel, copper, bronze or aluminium. Aluminum Oxide Semi-flexible abrasive grinding discs are perfect for weld removal, rust cleaning and most metal abrasive applications. The red semi-flexible fiber reduces vibrations that normally occur with the use of grinding wheels, it facilitates the operator’s labor while providing an excellent performance. Spiral pattern with cooling ridges to improve productivity and avoid loading. Semi-flexible discs must be used with the appropriate backing pad.

Aluminum Oxide disc

On this page you will find the right information about our Semi Flexible Disc, Type A. If you need more information, please fill in the form at the right side of this page.


Proud Manufacturers of SWISS DIAMOND TECHNOLOGY®. Innovators since 1952.


  • Very fast cutting and cleaning – Non Loading
  • Low noise, very flexible, light pressure
  • Fast stock removal at large grinding angle
  • Smooth finish at small grinding angle
  • Longer life – Made with multiple layers of abrasive with superior bonding material
  • No clogging
  • Traditional Red Fiber (DRY use, flexible)
  • Shapes and holes provide “cooler grinding”
  • Available in most coarse grit sizes
  • Flexible or rigid depending on the body
  • Different body material available
    • Traditional Red Fiber (DRY use, flexible in combination with back-up pad)
    • Fiberglass (WET or Dry use, rigid)


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Product specifications

Abrasive type
Type of abrasive
“A” Aluminium Oxide
Available Grits
16, 24, 36, 60, 80,
Application suitable for
Semi flexible disc with aluminium oxide grain for use on iron, stainless steel welds, cleaning off rust, deburring and most metal applications.
Backer type
"RF" Red Fiber for dry use of semi flexible disc. Very flexible Back-up pad required
“FG” Fiber Glass for wet or dry use. More rigid. No Back-up pad required.
Shape type

"FL" Flat, Type 27

“FL+” Flat with holes, Type 27

"B+ Domed with holes Type 29
Surface pattern
“ES” Smooth cutting
Body ø 115 / 4.5 “ ø 127 / 5 ” ø 178 / 7“ ø 230 / 9”
RF / FL+
RF / B+
FG / B
All discs have bore size 22.2 / 7/8”
How to order?
DiameterAbrasiveGrit sizeBodyAbrasive Shapes
Example Ø 115 C 16 RF / FL ES
Example Ø 178 C 60 RF/B+ MO