Proxxon Carbon Steel Cup Brushes 33/64" — 2-Pack (No. 28953)

Flexible carbon steel wire cup brushes for aggressive surface cleaning, deburring, rust removal, and finishing on a wide range of materials. The cup profile delivers broad surface contact ideal for cleaning larger flat areas, weld seams, and surfaces in a single pass. The flexibility of the carbon steel wire makes these brushes highly conformable — adapting to contoured and irregular shapes that rigid abrasives can't follow.

Specifications:

• Brush diameter: 33/64" (approx. 13mm)
• Style: cup brush
• Shank diameter: 2.35mm (3/32") — fits standard Micromot collets
• Bristle material: carbon steel wire (flexible)
• Quantity: 2 brushes per pack

Ideal for:

• Deburring metal parts and castings
• Rust removal from flat surfaces and weld seams
• Polishing and matting surfaces
• Paint and lacquer removal
• Cleaning electrical components
• Working on contoured and irregular shapes

Suitable materials: metal, non-ferrous metals, precious metals, castings, plastics, semi-precious stones, stone, and wood.

Carbon steel vs. brass — which cup brush do you need?

• Carbon steel cup brush (this brush) — more aggressive, better for rust removal, paint stripping, and heavy deburring on larger surfaces
• Brass Cup Brushes 33/64" — gentler, acid resistant and electrically neutral — safe for electronics and precious metals

Proxxon No. 28953

Works Well With:

• Professional Rotary Tool IBS/E — primary compatible Micromot rotary tool
• Proxxon AC Adapter NG 5/E with Electronic Speed Control (No. 38704) — variable speed bench power for controlled brushing
• Proxxon AC Adapter NG 2/S (No. 38706) — basic bench power supply for Micromot tools
• Carbon Steel Brushes 5/16", 2-Pack (No. 28951) — smaller flat steel brush for detail and tight-access cleaning
• Brass Cup Brushes 33/64", 2-Pack (No. 28963) — gentler brass alternative for delicate materials and electronics
• Tool Holder for Rotary Tools — mount your rotary tool hands-free for stationary brushing work

Returns can only be accepted for unused product in its original packaging. In addition to the returned item/items, a copy of the original packing slip or invoice is required. If proper paperwork is missing, PROXXON Inc. will not issue a credit. For warranty claims please call 1-877-776-9966. Please see our return and refund policy here.

WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.