Features ①Effective: Good sharpening effect, saving much effort. ②Portable: Light weight and compact size, easy to carry. ③Durable: Wear resisting corundum grinding wheel. ④Improving: Sharpen drill bits and improve their working performance. ⑤How to Use: Use electric drill with chuck to drive this tool. ***You're always welcome to contact us if you have any questions or problems on our service or products*** Features: ①Effective: Good sharpening effect, saving much effort. ②Portable: Light weight and compact size, easy to carry. ③Durable: Wear resisting corundum grinding wheel. ④Improving: Sharpen drill bits and improve their working performance. ⑤How to Use: Use electric drill with chuck to drive this tool. Specification: Material: Corundum + ABS + Steel Color: Blue Package Size: 19*8*4cm/7.5*3.1*1.6in Package Weight: Approx. 121g/4.3oz Package list: 1 * Drill Bit Sharpener 1 * Spanner ***Messages from customers would be answered in 24 hours. Nimoa always respects and provides customers with the best service.*** Package List