Features: Experience unparalleled drilling precisions with Four Edges Serrated Eccentric Drill Bits, designed with fine polishing carbide tips for exceptional hardness and durability across concrete, brick, tile, wood, and PVC surfaces. These drill bits feature a unique four edges serrated design and a 1/4" hex shank, ensuring low resistance and efficient drilling with reduced slippage on hard materials like masonry and ceramic. Ideal for both professional contractors and DIY enthusiasts, these drill bits cater to those who demand accuracy and reliability in their home improvement projects. Perfect for a variety of applications, from home renovations to intricate craftworks, these drill bits exceling in drilling through glass, marble, and thin metal sheets, making them indispensable for any toolkit. Engineered for excellence, the drill bit set combines industrial grade strength with user friendly functionality, ensuring every task is completed with precisions and ease. Specifications: Component: Cemented Carbide Color: As pictures shown. Diameter: 6mm+8mm+10mm+12mm Size: As pictures shown. Quantity: 4pcs Package Includes: 4pcs Four Flute Saw Tooth Drill Bits note: Please allow 0-2cm error due to manual measurement. Please make sure you do not mind before you bid. The color may Please allow 0-2cm error due to manual measurement. Please make sure you do not mind before you bid.