20" PSA Shredder Discs (2 Pack)
- 20″ ceramic PSA discs — peel-and-stick adhesive backing for big disc sanders
- Built for heavy-duty, high-heat sanding: deburring, blending, cleaning and finishing
- Two discs per pack, grits 36–120
Free shipping on orders over $99 (contiguous U.S.)
36 for heavy removal, 60 for general grinding, 80–120 for blending toward a finish.
Shredder grain for disc sanders
PSA (pressure-sensitive adhesive) discs peel and stick straight onto a 20″ backup pad — no hook-and-loop, no clips — giving a dead-flat bond that survives serious heat and pressure.
These run the same ceramic Shredder technology as our belts: self-renewing grain built for heavy-duty sanding under high-heat conditions on steel and stainless. Stick one on and shred away.
Grit guide
Which grit should you choose?
Two discs per pack, one grit per pack.
Maximum removal — heavy deburring and cleanup.
General grinding and blending.
Refining the surface after coarse work.
Finishing passes and pre-finish blending.
Suitability
What are these discs best for?
Use them for
- Heavy-duty disc sanding on steel and stainless
- Deburring, blending, cleaning and finishing
- High-heat applications where cheap discs glaze
Not the right disc for
- Sanders without a 20″ backup pad — the disc needs its matching pad
- Fine finishing past 120 grit
Technical details
The deeper dive
Peel the liner and press the disc onto a clean 20″ backup pad. The adhesive bond is flat and secure under heat and pressure — replace the disc when the cut rate drops.
The same ceramic Shredder technology as our 2x72 belts: self-fracturing grain that keeps exposing fresh cutting edges.
Disc sanders throw serious debris — eye protection and a properly rated respirator. We recommend a full-face respirator like this one on Amazon.
Complete the progression
Works together with
16″ PSA Shredder Discs
One size down.
12″ PSA Shredder Discs
For mid-size disc sanders.
Cloth PSA Sanding Discs
A/O cloth discs for finishing work, up to 30″.
Questions
20″ PSA disc FAQs
What does PSA mean?
Pressure-sensitive adhesive — the disc peels and sticks directly onto your sander’s backup pad.
What do I need to run these?
A disc sander with a 20″ backup pad. Stick the disc on and go.
Which grit should I start with?
36 for heavy removal, 60 for general work, 80–120 to blend toward a finish.
How many come in a pack?
Two discs of the grit you select.
When do I replace a disc?
When the cut rate drops noticeably or the disc loads and heats instead of cutting.
Stick it on and shred
Ceramic Shredder grain in a 20″ peel-and-stick disc — pick your grit.