United Abrasives SAIT 70828 TrimBack Regular Density Flap Disc | 5" Diameter | 7/8" Arbor Hole | Ceramic 40 Grit | Type 29 | Sold by Pack of 10

United Abrasives SAIT 70828 TrimBack Regular Density Flap Disc is built for aggressive grinding, extended disc life, and exceptional performance on tough metalworking applications. Featuring premium ceramic 40 Grit abrasive, this disc delivers cooler cutting, faster material removal, and significantly longer life compared to standard zirconium flap discs—making it ideal for high-pressure industrial use. Designed with a Type 29 angled profile, the SAIT Disc provides increased surface contact—perfect for contouring, edge grinding, beveling, weld removal, and heavy deburring. Its regular density flap construction ensures a balanced blend of aggressive grinding and smooth operation, suitable for both precision work and heavy-duty applications.

The 5" Diameter paired with a 7/8" Direct-Thread Arbor ensures quick, secure mounting on most angle grinders, minimizing setup time and keeping workflow efficient. Built for welders, fabricators, and metalworking professionals, the SAIT TrimBack Ceramic Flap Disc offers superior durability, longer life, and outstanding grinding performance—job after job.

Type: Flap Disc | Abrasive Material: Ceramic | Diameter (in.): 5 | Arbor Hole (in.): 7/8 | Grit: 40 | Max RPM: 13300 | Disc Type: Type 29 | Box of: 10 | __quantity: 10

Features:

• Specially designed ABS plastic backing can easily be trimmed away to expose more abrasive material
• Unique design is ideal for hand rail and fillet weld applications
• High performance zirconium grain for a wide variety of applications
• Contaminant Free (Fe + Cl + S < 0.1%)
• Only the TrimBack line of flap discs are able to be trimmed to expose more abrasive overhang
• Never trim beyond the maximum trim line (more than 1/4") or the ridged edge of the backing TrimBack plastic backing
• Always mount a TrimBack flap disc on a properly guarded right angle grinder
• To properly trim a TrimBack flap disc, apply the plastic backing to a secured metal workpiece while the grinder is running

Looking for more information about United Abrasives/SAIT Flap Disc? Click here to view the Catalog.

For help choosing the correct United Abrasives/SAIT Flap Discs for your application, please call (800) 608-5210 or email info@intlairtool.com.