Dapetz ® 5pcs HSS-R Jobber Drill Bits 8.5mm High Speed Steel 4341 Roll Forged Straight Shank Twist Drill Bits Black Oxide For Metal Steel Plastic Wood

MATERIAL: HSS - 4341 8.5mm jobber drill bits made from high-speed steel (HSS) 4341, known for its durability and toughness. The drill bits feature a black oxide finish, providing a dry rust-resistant coating that ensures faster cutting speeds and a longer lifespan. EFFICIENT OPERATION: The drill bits are designed with a straight shank, allowing for a firm hold and accurate centering in standard drill chucks and regular round collet chucks. This design ensures stability during operation, making it easier to achieve precise results. The split point style and 118° quick-cut points are self-centering, allowing for quick penetration with less pressure, thus preventing the drill bit from walking and ensuring faster chip and particle clearance. NO CENTER PUNCH REQUIRED: The innovative design of the 118° quick-cut points eliminates the need for a center punch. These self-centering points penetrate quickly with minimal pressure, enhancing efficiency and precision. Produced by precision fully ground, the drill bits ensure that chips move smoothly, reducing the risk of clogging and overheating during drilling. IDEAL FOR METAL DRILLING: These high-speed steel drill bits are particularly effective for cutting through hard metals such as stainless steel, cast iron, and sheet metal. They are ideal for a wide range of applications, including drilling stainless steel plates, automobile spring steel, die steel, and softer materials like wood and plastic. This versatility makes them a valuable addition to any toolkit, suitable for both professional and DIY use. INCLUDES 5 PIECES: The set includes 5 pieces of 8.5mm jobber drill bits, providing you with ample tools for various projects. These drill bits are perfect for use on metal, steel, plastic, and wood, making them a practical choice for a diverse range of drilling tasks.