Features: - Durable and long service life. - Compatible with impact drill and different power tool electric drill. - Well perfect for drilling machines, suitable for centering, drilling, tapping, reaming operation. Specifications: Material: Steel Capacity: 1.5-13mm Mount: 1/2"-20 UNF Package included: 1 x Drill Chuck Adapter 1 x Key Notes: 1. Manual measuring, please allow 1 ~ 3mm error,thank you. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the picture. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.