WIDE RANGE OF APPLICATION: The auger has professional technology and reliable quality. Extra long drill bits are suitable for most drilling jobs and materials such as aluminum, wood, plastic, etc. Great for DIY, home and general construction projects. Length: 150mm-160mm. ACCURACY AND DURABILITY: Twist drills are carefully manufactured and engineered for professional use, ensuring that the drills can be used for any hobby or precision job and provide you with precise design and machining. The auger is very sharp and of , so you can use it with confidence. MATERIAL: The auger is made of high-speed steel, which is more durable than other metal materials. The structure is very strong and stable. It will not bend or break easily. materials ensure that it can be used for a long time without rusting. INCLUDED IN THE KIT: The drill bit set includes 5 of the most popular drill bits in different sizes. It can meet your various needs and is suitable for various scenarios. As a poor newbie, this product will give you unexpected results. Diameter: 2mm, 3mm, 3.5mm, 4mm, 5mm. UNIQUE DESIGN: This auger has a pen-shaped design. You can easily adjust the vise head to grip the drill. The precision-engineered collet keeps the drill vertical, ensuring you don't sink during use, and it's compact and doesn't take up space. Easy to transport and store.