B&G_Automotive
Well-Known Member
http://www.abrasives4sale.com/crimped_wire_brushes.htm
these are the best things iv ever used but iv never bin able to find one for a 4 1/2 inch angle grinder again
Those are good for knockin down heavy rust but will not get completely down to bare metal as there is no grinding action knocking down the pitting caused by rust. I have never seen or used one like that on a 4 1/2 grinder are you sure it wasnt one of these?

Also if you want a cheap sand blaster for quick small jobs google search speed blaster.