Features X-Shaped Opening Design: Effectively reduces drill bit slippage, ensuring and secure drilling, enhancing safety and accuracy. Laser Scale with Clear Diameter: Easily visible diameter markings for quick and accurate measurements, improving efficiency and reducing errors. Multi-Purpose Application: Suitable for drilling into various materials including multi-plate, density board, and plastic board, offering versatility and convenience. High-Strength Alloy Steel: Possesses exceptional strength, toughness, wear resistance, and Deterioration resistance, ensuring durability and longevity. Stable Structure and Long Service Life: Twist drill bit with stable structure, excellent performance, and extended durability, providing reliable and long-lasting use. Features: 1、The product adopt X-shaped opening design, effectively reducing drill bit slippage 2、Come with laser scale, the diameter is clear at a glance, the marking is also visible 3、Sawtooth drill bit can be used for multi-plate, density board, plastic board hole opening 4、Made of alloy steel material, possess high strength, high toughness, wear resistance, Deterioration resistance 5、Twist drill bit come with stable structure, excellent performance and long service life Specification: Item Type: Sawtooth Drill Bit Material: Alloy steel Specification: Approx. 8mm / 0.31in 6.5mm / 0.26in 6mm / 0.24in 5mm / 0.2in 4mm / 0.16in m / 0.12in Package List: 6 x Sawtooth Drill Bit Package List 6 x Sawtooth Drill Bit