Can anyone please tell me where I can buy the replacement fiberglass brushes for this item?

There are replacements from Euro Tool PN: BRS-294.01. They used to be sold on amazon but it doesn't look like they are available right now. They are 1.25 inches long and an exact replacement for this brush.

Can you advance the fibers as the fibers wear down? Like a mechanical pencil as the lead wears down.

Yes you can advance the fibers just like a mechanical pencil. These are glass fibers and you should avoid getting the residue on your skin because it will cause you to itch but is not harmful. Pen is a life saver to clean awy corrosion from contacts.

What is the diameter of the fiber bundle?

in the pen, mine is not quite 3/16 on an inch in diameter, or about 4 mm. They are a tiny bit smaller ub the package, to allow you to more easily load them into the pen. They spread a tiny amount after you start using it. Hope this helps

Does it work with laptops and stuff? not the screen I'm talking about aluminum I need to polish the aluminum part behind the screen

It won't really polish. If you're looking for a shiny surface, this is not the tool for that. I will leave a surface looking like it had been worked on with a wire brush.I use mine to remove contaminants from battery terminals and other types of contacts.

ASIN	B0019V18D2
Best Sellers Rank	#52,216 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #101 in Scratch Brushes
Color	Assorted Colors
Date First Available	September 18, 2008
Department	mens
Grit Type	Coarse, Medium, Fine, Super Fine
Is Discontinued By Manufacturer	No
Item Diameter	0.5 Inches
Item Weight	0.48 ounces
Item model number	BRS-294.00
Manufacturer	Eurotool
Number of Pieces	1
Recommended Uses For Product	Grinding, Rust Removal, Deburring
UPC	654207124245
Unit Count	1.0 Count

Scratch Brush, Fiberglass (Colors may vary)

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Description

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Common Questions