Features: *The drill bit in the package is 300mm, which is longer than the standard drill bit and drills deeper. These drills are made of high speed steel for durability, high wear resistance and long service life. *Double groove drill + round shank: Featuring a dual flute chip evacuation design, these bits speed up the drilling and chip evacuation process. Round shanks are suitable for most types of hand and impact drills. *Exquisite craftsmanship: Drills are formed after quenching, and they meet industry tolerance standards for hole diameters. Each drill bit meets industrial performance and safety standards. *Widely used: Suitable for various materials, such as die steel, spring steel, white steel, ordinary steel, aluminum, copper, wood, stainless steel (within 1-4mm), plastic and PVC, etc. Specifications: *Material: high speed steel *Color: Silver *Length of each drill bit: 300mm *Diameter of drill: 7/8/9/10/11/12/13/14/15/16mm *Quantity: 1 Pc Package Contents: 1 × 300mm Extra Long Drill Bits Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. Brand new and high quality Made of high quality material, durable Please check the product size, model and make sure it can be used before purchasing When you encounter problems, please contact us, we will try our best to help you solve them Whether the product satisfies you, we want to hear your opinion Every customer can enjoy 30 days refund or replacement for Damaged/Quality Issues