How many do you get for 16.58?

Just one of them. It is a 2" 50 grit (green) Roloc disc. You also will need the Roloc 2" adapter if you do not have it already. These bristle discs do last a long time though.

Is this product used with a regular grinder?

These bristle discs come in different sizes, as well as different grits. They come in 2",3" and 4 1/2" The 2" ones shown here, attach to a roloc adapter that ends in a 1/4" shaft. It is intended to be used in a die grinder which come straight or right angle. The large 4 1/2" discs are intended for use in a regular right angle grinder. They are also made in wheel form for use on a bench grinder. BTW the roloc adapters also accept Scotch Brite pads of various grits. These are expensive; the 4 1/2 ones are REALLY expensive

Do you recommend using these for carbon buildup on piston heads?

Maybe use one of the the higher grit ones yes. They work quite well. Used one to clean the heads on our explorer when we rebuilt the engine just don't dig into and put a lot of pressure on it let the bristles do the work

Looking for something to scuff between layers of fiberglass and epoxy on a boat, would this be easier than by hand or a orbital sander?

These guys are pretty small so think about surface area. Personally I tried work bigger than 2 square feet and eventually moved to other tools

3m 048011 18730 2 3m 18730 Roloc Bristle Disc Grade

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¥8420

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Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡️ Spin, polish, perfect — the pro’s secret weapon for flawless metalwork!

GRADE 50 CERAMIC GRIT - Medium grit ensures aggressive yet controlled material removal without surface damage.
PRECISION 2 INCH DIAMETER - Compact size engineered for detailed work on automotive aluminum and metal surfaces.
TURBOCHARGED 25 000 RPM SPIN - Unleash rapid, professional-grade cleaning and polishing power with every rotation.
EFFORTLESS SURFACE PERFECTION - Achieve flawless piston, valve, and joint surface finishes in record time—no scratches, no fuss.
TRUSTED 3 M QUALITY COMPATIBILITY - Seamlessly fits angle grinders, backed by 3M’s industry-leading durability and performance.

The 3M 18730 Roloc Bristle Disc is a 2-inch, Grade 50 ceramic aluminum oxide abrasive disc designed for high-speed (up to 25,000 RPM) polishing and rust removal on automotive aluminum and metal. Compatible with angle grinders, it delivers efficient, scratch-free surface preparation trusted by professionals.

Specifications

ASIN	B002P55TX6
Best Sellers Rank	47,139 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 11 in Bristle Discs
Brand	3M
Compatible Devices	Angle Grinder
Compatible Material	Aluminum, Metal
Compatible devices	Angle Grinder
Construction Type	Coated
Customer Reviews	4.6 out of 5 stars 816 Reviews
Grit Material Type	Ceramic Aluminium Oxide
Grit Number	50.0
Grit Type	Medium
Grit material	Ceramic Aluminium Oxide
Grit type	Medium
Included Components	3M 3M-18730 Roloc Bristle Disc Grade - 50, Size - 2
Industry Standard Identifier	3M-18730
Item Diameter	2 Inches
Item Dimensions	5.1 x 5.1 x 5.1 centimetres
Item Dimensions L x W	5.1L x 5.1W centimetres
Item Thickness	2 Inches
Item Type Name	3M 3M-18730 Roloc Bristle Disc Grade - 50, Size - 2
Item thickness	2 Inches
Manufacturer	3M
Manufacturer Part Number	MMM4801118730
Material	Aluminum Oxide, Ceramic
Max Rotational Speed	25000 RPM
Model Number	048011-18730
Number of Items	10
Product dimensions	5.1L x 5.1W centimetres
Recommended Uses For Product	Polishing, Rust Removal
Set Name	Single
UPC	048011187303
Unit Count	1.0 count

Reviews

G**4

Super produit

J'aurais aimé le connaître bien plutôt, je m'en sert pour la mécanique nettoyage des plan de joint parfaitement et piston, soupapes etc nickel sans rayures en un temps record et sans effort.

2.08.2024

S**D

Original and good quality

all good

24.09.2023

D**L

Excelente

Muy bueno

14.03.2024

T**E

Worked great to remove adhesive on our truck!

These worked great! Super durable! Amazed at the quality for the cost - held up well - made the areas my husband was working on smooth! He was using them to polish off old glue on our truck.

22.05.2026

C**M

Legit 3m

Legit 3m product Works great for removing rust. Fans out nice on a die grinder when using.

31.10.2025

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¥8420

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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