1、Suitable for a screwdriver handle or electric screwdriver tool (hexagonal hole or three‑jaw chuck) drive sleeve to use.2、These adapter will make your work more convenient and labor‑saving.3、Made of high quality chrome‑vanadium steel material, high strength, abrasion resistance and durable.4、After install the original hexagonal size can be converted to square head size,so use to install the sleeve, is a good accessory to convert.5、Exquisite details, fine craftsmanship, not easy to rust, safe and secure. 6、These different drill bits, can meet different using needs, suitable for wood drilling. 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.