The magnetic ring firmly absorbs the drill bit shank, the locking screw, obviously magnetized, and the non-slip thread design, not easy to fallS2 alloy steel material, strong and stable, long service lifeThe hex driver does not fit round shank bits, only bits with 1/4 inch shank diameterLightweight and portable, easy to store, is a good helper3 colors, easy to carry disassemble and use, improve work efficiency Material: aluminum alloy + strong magnet Function: it is more convenient to install screws with grooved bit, adsorption screws, screws of fixation. The wear of the bit head is mainly due to the fact that the bit head cannot be fully matched with the screw during the screwing process, which will damage the bit head. The magnetic ring can firmly hold the screw to prevent the wick head from slipping, thus extending the life of the wick head.Due to problems such as light and different monitors, there may be color difference in color, please understand. refer to the actual product, please understandQuantity delivered: 3 rooms