Fast Drilling: Featuring a 4-blade serrated eccentric drill design, this drill bit is sharp, wear-resistant, and made with high-hardness materials for quick and efficient hole drilling Threaded Chip Removal Design: The drill bit is designed with a threaded chip removal groove that expands the space for cooling, ensuring smooth chip discharge and preventing clogging Hex Anti-Slip Shank: The hexagonal shank ensures a secure, slip-resistant grip, while the specially designed cutting edge creates an alternating cutting motion for better drilling efficiency High-quality Materials: Made from high-quality alloy steel, this drill bit is sharp, sturdy, and has a long service life Versatile Application: Suitable for a variety of materials including stone, cement, wood, ordinary tiles, brick walls, and more. For tougher materials like marble or glass, water cooling is recommended 1. Upgraded 4-blade serration, eccentric ceramic tile, applicable to a variety of materials 2. Non-slip hexagonal shank for faster drilling and better durability. 3. Eccentric positioning tip design greatly improves accurate positioning and fast drilling 4. Threaded chipformer design, expanding the space for chip removal and cooling 5. Multi-tooth cross-eccentricity, cutting edge design, forming a unique cutting trajectory Name: Multifunctional Wear-Resistant Masonry Drill Bit Size:6mm, 8mm, 10mm, 12mm Length:90-120mm Color:As Shown Material:Metal Package Contents: 8 * Drill Bits Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.