6PCS 4-Blade Saw Tooth Eccentric Drill Bit Hard Alloy Alloy Drill Bit High-Strength Four-Edge Serrated Drill Bits Sawtooth Drill Bit for Wood/Concrete

6PCS 4-Blade Saw Tooth Eccentric Drill Bit Hard Alloy Eccentric Twist Drill Bit High-Strength Four-Edge Eccentric Drill Bit 4/5/6/8/10/12mm Sawtooth Drilling Tools Professional Rotary Tool Accessory Feature: 1.Alloy Drill Bit: This series of eccentric twist drill bits is made from alloy, thoroughly hardened and ground for sharpness. The polished surface allows smoother threading, offering excellent wear resistance and durability during use. 2.Unique Four-Edge Eccentric Design: With a tilted four-edge eccentric drill bit design, positioning is more stable and penetration resistance is reduced. A hexagonal handle ensures a firm grip, providing additional while preventing slipping and deflection. 3.High-Strength Eccentric Twist Drill Bit: Specifically designed for hand drills, these high-strength eccentric twist drill bits offer precise positioning and low resistance, effectively preventing slipping and skewing. Ideal for quick drilling in concrete, brick walls, and ceramics. 4.Polished Surface for Smooth Drilling: The polished surface of these concrete brick drill bit sets reduces friction, allowing the drill bits to perform efficiently and smoothly even on tough materials like ceramic tiles and thick rocks. 5.Suitable for Various Materials: These four-edge serrated drill bits are for drilling into tough surfaces. Water cooling is recommended for drilling glazed pottery, thick rock, and glass to achieve optimal results.Specification: Origin: Mainland China Material: Tungsten carbide Quantity: 6pcs (4mm+5mm+6mm+8mm+10mm+12mm) Handle diameter: 6.3mm/0.25inch Gross weight: 180g Wide range of applications: glass, tile, marble, wood, ceramic, stone, concrete, brick, hard plastic, cement, etc. Note: Due to different monitor settings and lighting conditions, the actual color of the item may vary slightly from the pictures. Thanks for your understanding! Please allow a 1-2 cm difference in measurements due to manual measuring.