0.012" Brass Bristle, 7-1/8" x 2-1/4" Large Block Brush 426B - Gordon Brush
FPPO Brass Wire Wheel Brush Kit for Drill,Crimped Cup Brush with 1/4-Inch Shank,0.13mm True Brass Wire,Soft Enough to Cleaning or Deburring with Less Scrach: Amazon.com: Industrial & Scientific
1" Crimped Wire End Brush with 1/4" Hex Shank (Brass Coated)