1、There is a box which you can store and convenient to carry the screwdriver bit is easy to install and remove 2、Including 20pcs kits with a variety of bit specifications can solve your various needs 3、Made of high-speed steel material sturdy and durable durable and long service life 4、The sets have professional design and reasonable structure easy to replace and install 5、The fixed main part has delicate design convenient to use and effort?saving
