These drill bit sets include 6 individual drill bits. It is economical and easy to store. Titanium coatings are ideal for opening holes in a variety of materials.<br> Stronger and more durable. The stepped design makes drilling and cutting accurate and efficient Convenient and widely used. New design, smoother cutting, make your industrial building more perfect.<br> Connect the drill bit to the power drill<br> Use another tool to measure the diameter of the desired hole size.<br> Then select the step drill of the corresponding size<br> Correctly install the step drill on the electric drill, and finally align the target hole position perpendicular to the workpiece, and start drilling to the required size.<br> 1. Manual measurement, please allow 1~2cm error, thank you.<br> 2. Due to the difference of different monitors, the picture may not reflect the actual color.<br> Kind tips:<br> In order to prolong the service life of the step drill bit and facilitate drilling, it is best to add oil before use.<br> Color: Multicolor<br> Size: 17*12*3.5cm<br> Delivery quantity: 1 set<br> 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. Sold by-DIMEANI official store