The Ronix RH‑9939 Copper Coated Wire Brush 5pcs Set is a versatile and heavy‑duty accessory designed for a wide range of cleaning, surface‑preparation, and finishing tasks — from metalwork to wood, concrete, and DIY jobs. Its copper‑plated carbon‑steel bristles combine strength, elasticity, and temperature‑resistance for reliable performance, even under tough working conditions.

Specifications:

• Model: RH‑9939
• Wire Material: Copper‑plated carbon‑steel (crimped wire)
• Shank Size: 1/4‑inch hex (approx. 6.35 mm) — compatible with most drills and impact drivers
• Pack: 5 brushes
• Brush Shapes & Sizes:
  • Wheel brush — Ø 50 mm
  • Wheel brush — Ø 75 mm
  • Cup brush — Ø 50 mm
  • Cup brush — Ø 75 mm
  • End brush — Ø 25 mm (for tight spots)
• Wire Diameter: ~0.3 mm
• Max Safe Speed: 4500 RPM

Features:

• Multiple brush shapes in one set — wheel, cup, and end brushes give flexibility for different surfaces and tasks.
• Copper‑coated crimped wires provide good elasticity and resist heat buildup, ensuring durability under frequent or heavy use.
• Designed for removing rust, paint, weld spatter, scale, old coatings, dirt, and other surface contaminants.
• Suitable for surface roughening, cleaning metal parts before welding or painting, deburring, and general maintenance tasks.
• The compact end‑brush is ideal for reaching corners, holes, and tight spaces that are otherwise difficult to access.

Ideal Use Cases:

• Surface cleaning and rust removal on metal parts, pipes, and machinery.
• Stripping paint or old coatings from steel, metal sheets, or frameworks.
• Preparing metal surfaces before welding or painting for better adhesion.
• Deburring edges and cleaning weld spatter after fabrication work.
• Cleaning and refurbishing tools, metal furniture, grills, frames, or automotive parts.