Features: FAST AND EFFICIENT DRILLING: The four-blade cross-design enables rapid drilling, reducing the time and effort required to complete your projects. The eccentric shape allows for better control and stability during drilling, reducing the risks of slipping and ensuring accurates hole placement. CLEAN AND SMOOTH-HOLES: Our drill bit39;s unique design minimizes splintering and produces clean, smooth-holes in various materials. Enjoy professional-grade results and a polished finish every time. VERSATILE USE: These drill bits are suitable for various materials, including wood, plastic, concrete, brick, marble, glass, ceramic, and metal. It offers the versatility you need for a wide range of projects. ENHANCED DURABILITY: The spirals design clears particles quickly and decreases friction and heat for a fast and cooler drilling performance. COMPATIBLE TOOLS: The set includes 4 most commonly used drilling sizes 6/8/10/12mm to meet your needs. The shank is compatible with most standard electric drills, hand drills, and bench-drills. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Specifications: 4 pieces Blades Diameter: 6mm/8mm/10mm/12mm Package List: 4pcs High Hardness Skewed Head Eccentric Drill Set