★EASY STORAGE: The carbide burr kit features a 3 mm (1/8 inch) diameter shank, along with a plastic case for safe storage and protection. Additionally, complimentary sandpaper is included for sanding burrs after drilling. ★PREMIUM QUALITY: These grinder bits are crafted from tungsten carbide, providing exceptional sharpness and toughness. They are perfect for engraving, polishing, and drilling tasks, ensuring a long working life and precise shaping. ★Usage Scenario: Rotary files are highly versatile and suitable for machining both metallic and non-metallic materials. They are ideally suited for wood carving, mold machining, burr cleaning, impeller polishing, grinding, milling, and various other tasks. ★VERSATILITY: This set includes 10 different types of burr bits, making it suitable for a wide range of jobs. It is compatible with Dremel bits and most 1/8" collet rotary tools, including pneumatic tools, grinders, and more. ★Safety Protection: Please wear goggles and take protective measures during use to avoid injury caused by debris splashing during cutting 1