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Brown 2-inch quick-change sanding disc pack of 50

3M

3M 49939 361F Quick Change Disc 2in P120 PK50

SKU CH-E3XV-25SB8 MPN 49939

Quick-change sanding disc with aluminum oxide grit 120, 2 in diameter, TS attachment, rated to 25,000 RPM, pack of 50

  • TypeSanders
  • Quick-change TS system speeds disc swaps
  • Aluminum oxide grain delivers consistent medium-grade finish
  • Polyester XF backing resists heat at 25000 RPM
  • Two-inch diameter fits compact sanding tools
  • Pack of 50 discs supports extended workshop use

3M 361F Quick Change Disc P120

The 3M 49939 is a 2-inch coated abrasive disc designed for sanding and surface preparation tasks. It uses aluminum oxide grain on an XF-weight polyester backing for consistent cutting action. The pack contains 50 discs suited for professional workshop use.

Check TS quick-change compatibility

Verify that your disc holder or backup pad accepts the TS quick-change system before ordering. The maximum operating speed is 25,000 RPM, so the tool must be rated for at least this speed. Confirm the 2-inch diameter matches your application requirements.

Fits TS holders for rapid disc swaps

The TS mounting allows fast disc changes without tools, reducing downtime during multi-step finishing jobs. Closed-coat construction resists loading on metal and wood surfaces. Heat-resistant properties help maintain performance during extended sanding sessions.

Highlights

  • Quick-change TS system speeds disc swaps
  • Aluminum oxide grain delivers consistent medium-grade finish
  • Polyester XF backing resists heat at 25000 RPM
  • Two-inch diameter fits compact sanding tools
  • Pack of 50 discs supports extended workshop use

Specifications

TypeSanders
Brand3M
Model49939

Questions about this item

What comes in the box and is a backup pad needed?

The pack contains 50 brown 361F quick-change discs, each 2 in diameter with P120 grit. A compatible TS-style backup pad is required and sold separately.

Which grit should I choose for this 361F disc?

This model is supplied in P120 medium grade, suited for intermediate sanding and surface preparation before finishing.

What does the 25 000 RPM rating mean when the disc is on my sander?

It is the maximum safe operating speed; do not exceed 25 000 RPM on the tool or the disc could fail.

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