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3M 3/4" Radial Bristle Discs - Otto Frei
3M 3/4" Radial Bristle Discs - Otto Frei
3M

3M 3/4" Radial Bristle Discs Various Grits-Packs of 12

Part # 116.581 81 In Stock Weight -- lb / -- g
$21.25
Volume pricing
Total qty Discount Per unit You save
1 – 2 – $21.25 –
3 – 4 5% off $20.19 $1.06
5 – 9 10% off $19.12 $2.13
10 + 12% off $18.70 $2.55
Add 2 more for 5% off, saves another $1.06 each.

Pack Size Options

Sold in packs. See Product Description for quantity.

Grit: 80 Grit Yellow

Description

The 3M 3/4" Radial Bristle Discs are professional-grade polishing and finishing discs designed for use with a flex shaft. Sold in packs of 12 individual discs, they stack onto a pin-hole mandrel — use one disc or stack four to six together to build a flexible brush suited to your application. No polishing compound is needed; the abrasive compound is built directly into the bristles.

Sold in packs of 12

Beware of low cost imitations-insist on genuine 3M Radial Bristle Discs

These discs are long-lasting, cool-running, and deliver a uniform, easy-to-control finish without heat buildup that can damage delicate work. Seven grits are available, covering the full spectrum from rapid scratch removal to final high-polish finishing — making it easy to build a complete polishing progression for metal, stone settings, and other jewelry surfaces.

Features

  • Abrasive compound built into bristles — no separate polishing compound required
  • Stack multiple discs on a pin-hole mandrel to create a custom brush thickness
  • Cool-running design minimizes heat buildup and potential workpiece damage
  • Delivers a uniform, controlled finish across curved and detailed surfaces
  • Long-lasting bristles that do not require recharging
  • Seven grits available to cover coarse scratch removal through final polishing
  • Designed for use with a flex shaft
  • Sold in packs of 12 individual discs

Specifications

Diameter 3/4"
Pack Quantity 12 individual discs per pack
Intended Use Polishing and finishing with a flex shaft
Mandrel Type Pin-hole mandrel (sold separately)

Available Options

Part # Grit / Grade Color Application
116.581 80 Grit Yellow Rapid scratch removal — coarse (Titanium Dioxide)
116.581.5 120 Grit White Light scratch removal (Titanium Dioxide)
116.582 220 Grit Red Very light scratch removal
116.583 400 Grit Blue Pre-polishing step one
116.584 Pumice Pink Pre-polishing step two (Silica)
116.585 6 Micron Peach Final polishing step one
116.586 1 Micron Light Green Final polishing step two — finest

Notes

  • This listing is for the 3/4" diameter size only. Radial Bristle Discs are also available in 9/16" and 1" sizes for flex shaft use, and in 2" and 3" diameter sizes for use on a polishing lathe.
  • Some variants contain Titanium Dioxide (80 Grit, 120 Grit) or Silica (Pumice Pink) — see California Proposition 65 warnings where applicable.
  • Pin-hole mandrel sold separately.

Specifications

Brand
3M
Part #
116.581
Type
Brushes
Country of Origin
United States
Dimensions
1 in x 1 in x 0.1 in
Diameter
3/4"
Pack Quantity
12 individual discs per pack
Intended Use
Polishing and finishing with a flex shaft
Mandrel Type
Pin-hole mandrel (sold separately)
California Prop 65 Warning California Prop 65 Warning:
This product can expose you to titanium dioxide, which is known to cause cancer. www.P65warnings.ca.gov.

Reviews · 6

This product has 6 reviews.

Read & write reviews ↓

Customers praised these radial bristle discs for superior quality and performance. The ability to order individual grit packets rather than kits is "so much more cost effective" and highly valued. Shoppers noted the "perfect size" and effectiveness, with consensus that these discs work exceptionally well.

Option (positive)Wheels (positive)Brushes (positive)Grits (positive)Size (positive)
  • 5 stars: 6 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
D
Deseree

I love the option of ordering the grits I use most often in individual packets vs. the kits that always have a few grits I don’t ever use. This is so much more cost effective! I haven’t found anywhere else that offers this on the 3/4” wheels. 3M radials are far superior than the competitors. Ty Otto Frei!

D
Deseree

I love the option of ordering the grits I use most often in individual packets vs. the kits that always have a few grits I don’t ever use. This is so much more cost effective! I haven’t found anywhere else that offers this on the 3/4” wheels. 3M radials are far superior than the competitors. Ty Otto Frei!

D
Deseree

I love the option of ordering the grits I use most often in individual packets vs. the kits that always have a few grits I don’t ever use. This is so much more cost effective! I haven’t found anywhere else that offers this on the 3/4” wheels. 3M radials are far superior than the competitors. Ty Otto Frei!

D
Deseree

I love the option of ordering the grits I use most often in individual packets vs. the kits that always have a few grits I don’t ever use. This is so much more cost effective! I haven’t found anywhere else that offers this on the 3/4” wheels. 3M radials are far superior than the competitors. Ty Otto Frei!

C
Cindy Beltran
80 Grit Yellow
Radial 3mm brushes

Love these I seem to use mostly yellow white red blue.luckily I can order them singularly

B
Brandi

Love these! Perfect size and they work so well!