[Stronger 1/4Inch Hex Shank] 1/4Inch (6.35mm) hex shank has better stability and is stronger than the regular round shank (6mm) and not come off as easily as the round shank.Wire brush drill attachments can withstand the high speed of the 4500RMP. [More Robust Wire Brush for Drill] The standard 1/4 hex shank is compatible with most drill tools on the market,including a regular power drill as well as a pneumatic air drill, etc.Long-term use of the cup brush not be asymmetrical and distorted. [Production process upgrade] Wire brush bit attachments are made from curled, untempered 0.012Inch carbon steel wire. upgraded from 60A carbon steel to 72A carbon steel, and upgraded in number and thickness (1-1.5 times).They are securely fastened to a securely designed cup-shaped metal holder that not lose or bend during intense use. [Cost-Effective Wire Brush for Drill Bits] Drill wire brush set , including wire wheels for drill, pcs wire cup brush for drill and wire end brushes. Drill wire brush set Ideal for home rust removal work. The drill wire wheels set has diversified specifications to meet different descaling work.The wire wheel drill includes 3inch (75mm), 2-1/2inch (62.5mm), 2 inch (50mm), 1-1/2 inch (38mm), wire cup brush for drill size is 2-1/2inch (62.5mm), 2inch (50mm) for flat work, 1 inch ( 25mm) wire end brush is suitable for working in a relatively small space., Weight: 0.99869404686 pounds, Manufacturer: Aisuoka