The CHENGU 12-Piece Bore Brush Set delivers precision workshop cleaning for confined spaces with scientifically designed wire brushes. Engineered with quality brass and stainless steel, this versatile collection tackles rust removal, corrosion, and detailed surface preparation across power tools and delicate applications. 🧼 At a Glance Type Cup Brushes Quantity 12 Pieces Material Stainless Steel, Brass, Copper Shank Type 1/4" Hex Overall Length 4-3/4 Inches Brush Widths 8-19mm ✨ Professional-Grade Engineering This comprehensive set features multiple width options—8, 10, 12, 15, 17, and 19mm—with crimped twisted wire construction for enhanced cleaning action. The durable brass and copper composition delivers superior strength and longevity, while the scientific bore design ensures effortless access into narrow holes and confined spaces where standard brushes cannot penetrate. Perfect for removing rust, corrosion, paint stains, and surface oxidation without damaging fine finishes or delicate features. ⚡ Performance Profile Rust Removal Exceptional Access to Tight Spaces Superior Surface Preservation Delicate Tool Compatibility Universal 🔩 Power Drill Compatible ⚙️ Impact Driver Ready 🛠️ Die Grinder & Angle Grinder ✨ Precision Finishing 🏗️ Industrial Grade 📐 Use Cases & Applications 🚗 Automotive Parts & Machinery ↩️ 30-Day Returns Unused items, 30 days. Damaged, wrong, or lost made right. 🔒 Secure Checkout Encrypted payment, trusted by Shopify. 📦 Tracked Shipping Every order ships with tracking. Why Home Cooks Choose SERA ✓ Hand-CuratedEvery tool & ingredient is selected for quality — not mass-listed. ✓ Café & Kitchen GuidanceClear how-to notes so you get great results at home. ✓ Real SupportQuestions? Our team replies within 24–48 hours. 📬 Shipping & Delivery: Your order ships with tracking and a confirmation email. Delivery times vary by destination. Easy 30-day returns on unused items — plus damaged, wrong, or lost orders made right.