10pcs 3x140mm Diamond Needle File Set Half Round/Round/Triangle Files Titanium Coated Tools DIY Wood Rasp File Needle For Stone _x000D_ _x000D_ _x000D_ Specifications: Size: 3mm x 140mm File Type: Half Round / Round / Triangle Total Length: 140mm / 5.5" (approx.) Diamond-plated Length: 50mm / 1.97" Shank Size:4.5mm / 0.18"(Triangle) 5mm / 0.2" (Half Round & Round) Material: Diamond, Bearing Steel, Plastic Finish: Titanium Coated _x000D_ _x000D_ Package Includes: _x000D_ 10pcs x Diamond Needle Files Descriptions: 1. 5.5" (140mm) total length, 1.97" (50mm) diamond working length. For working on small, delicate projects. Mainly used for processing hard material, quenched material, glass products etc. 2. Suitable for shaping metal, wood, plastic, marble, stone. Especially perfect for finely grinding models and jewellery, instrument parts, and dies. 3. Dipped handle provides firm and comfortable grip in use when exposed to fluid or moisture. 4. Organized in a plastic pouch for dust-resistant storage. Titanium plating can offer capability, wear resistance, rust prevention, and long service life. 5. For long-lasting use, please use a lubricant (such as water) when using diamond needle files. _x000D_ _x000D_ _x000D_ _x000D_