elongated needle-shaped diamond grinding bits, 0.8 mm point, 80 mm total length

✨ General Description: 5 elongated needle-point diamond grinding wheels — ideal for fine sanding, engraving, and precise finishing on stone, jade, glass, or resin. Perfect for demanding craftspeople, sculptors, and DIY enthusiasts seeking precision, durability, and ease of use. 📐 Technical Specifications: Contents: 5 diamond grinding wheels (elongated needle shape) Point diameter: ≈ 0.8 mm Working length: ≈ 49 mm Overall length: ≈ 80 mm Shank diameter: ≈ 3 mm Shank length: ≈ 31 mm Base diameter: ≈ 3.2 mm Condition: New, professional quality 🔧 Installation: Immediate mounting on any rotary drill or multi-tool equipped with a 3 mm chuck. Secure, play-free mounting — no adjustments or additional tools required. 🎯 Applications: Perfect for roughing, mold fitting, engraving on stone or glass, cutting fine lines, hollowing, or delicately finishing jade. Their elongated shape offers optimal control in confined areas. 📦 Other information: Premium construction: durable materials, precise machining, and a smooth surface for seamless polishing. Each wheel is easy to replace — saving time and ensuring a long service life. Designed for universal compatibility with variable-speed machines.