1. Name: 10 PCS Diamond Needle Files Set
2. Material: High carbon steel
3. Specifications: ... More ...
1. Name: 10 PCS Diamond Needle Files Set 2. Material: High carbon steel 3. Specifications: Φ3mm×140mm×50mm Φ4mm×160mm×50mm Φ5mm×200mm×70mm 4. Type: Flat, Triangle, Round, Half Round, Square, Oval, Rhombic. 5. Applications: To be used effectively against extremely hard materials, such as stone, glass or very hard metals such as hardened steel or carbide against which a standard steel file is ineffective.