Metal Drill Bit Sets,1pcs Extra Long Twist,500mm Length High-Speed Steel HSS Straight Shank Spiral for Wood Aluminum Plastic(8 * 500mm)

【Exquisite Craftsmanship】 These drill bits are quenched and meet industry tolerance standards for precise hole diameters. Each bit adheres to industrial performance and standards. 【Widely Used】 Suitable for various materials including die steel, spring steel, white steel, ordinary steel, aluminum, copper, wood, stainless steel, plastic, and PVC, making them versatile for different applications. 【Double Groove Drill + Round Shank】 Featuring a dual flute chip evacuation , these bits facilitate faster drilling and efficient removal of chips. The round shanks make them compatible with most hand and drills. 【500mm Extra Long HSS Drill Bits】 These drill bits are longer than standard , measuring 500mm, allowing for deeper drilling. Made of high speed steel, they offer durability, high wear resistance, and a long service life. Ideal for DIY, professional, and workshop tasks;