Ensure safety and precision with the unique hexagonal shank that provides an anti-slip grip. Specially designed cutting edges promote an alternating cutting motion, enhancing drilling efficiency. Experience seamless drilling operations with the innovative thread chip removal grooves. These grooves expand the cooling space, facilitating smooth chip removal and preventing blockages for uninterrupted drilling performance. Boost productivity with a 4-blade serrated eccentric drill bit design that ensures sharpness and wear-resistance. Crafted from high-hardness materials, this drill bit enables rapid and effective drilling across various surfaces. Benefit from durability and longevity with the premium alloy steel construction of the drill bit. Its sharpness and strength guarantee extended service life, making it a reliable tool for your drilling needs. From stone to wood, cement to ceramic tiles, and even brick walls, this drill bit is suitable for a wide array of materials. For tougher surfaces like marble or glass, consider using water cooling to optimize performance. Item Name: Drill Bit Material: Alloy Steel Features: Long Lasting, Rustproof, Corrosion Resistant Size Details: 6 mm, Length: 95mm/3.74" (Approx.) 6 mm, Depth: 50mm/1.97" (Approx.) 6 mm, Diameter: 6mm/0.24" (Approx.) 6 mm, Bottom Diameter: 6.35mm/0.25" (Approx.) 8 mm, Length: 115mm/4.53" (Approx.) 8 mm, Depth: 65mm/2.56" (Approx.) 8 mm, Diameter: 8mm/0.31" (Approx.) 8 mm, Bottom Diameter: 6.35mm/0.25" (Approx.) 10 mm, Length: 120mm/4.72" (Approx.) 10 mm, Depth: 75mm/2.95" (Approx.) 10 mm, Diameter: 10mm/0.39" (Approx.) 10 mm, Bottom Diameter: 6.35mm/0.25" (Approx.) 12 mm, Length: 120mm/4.72" (Approx.) 12 mm, Depth: 75mm/2.95" (Approx.) 12 mm, Diameter: 12mm/0.47" (Approx.) 12 mm, Bottom Diameter: 6.35mm/0.25" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: Size 6mm/8mm/10mm/12mm: 1 x Drill Bit Or Size 4pcs: 4 x Drill Bits