Counterbore drill bit, adjustable limit in alloy steel, fast chip removal, 3.5X10mm cutter

Features: 1. Adjustable limit: The drill bit's premium punching efficiency and its ability to prevent drilling through walls are two attributes of its adjustable limit. Use as needed. 2. Alloy steel material: This drill bit is made of high-quality alloy steel, which is wear-resistant and impact-resistant, and has a long service life. 3. Fast chip removal: A spiral groove with a central drill bit effectively prevents the accumulation of retained rock debris, quickly removes debris from the hole, and increases drilling efficiency. 4. WIDE APPLICATION: This drill bit can be used for milling and drilling soft metals, fiberboard, wood, plastic, and aluminum alloy screws, among other materials. 5. EASY TRANSPORT: The drill bit set is lightweight and portable for easy use, doesn't take up much space, use it as needed! Specifications: Item Type: Counterbore Drill Bit Material: Alloy Steel Color: Silver Specifications: Approx. 3.5 x 10 mm / 0.14 x 0.39 in Application: Used for milling and tapping wood, plastic, soft metal, fiberboard, aluminum alloy screws, etc. Package List: 1 x Counterbore Drill Bit 1 x Wrench 1 x Hex Key 1 x Adjustment Screw 1 x Storage Box