Specification: Material: plastic, corundum. Sharpener size: 170*85mm. Spanner length: 70mm. Weight: Approx. 87g. Package list: 1 x drill bit sharpener, 1 x spanner. Features: Made of high-quality plastic and corundum, high hardness, rustproof, solid and durable. Easy to carry: Lightweight and compact size. Applicable type: Mainly used for grinding iron drills. Widely use: Great for fast drilling, tapping and more. Great effect: The grinding wheel drill bit has great sharpening effect, saving much effort and time. Durable: Wear resisting corundum grinding wheel for long-term use.