1FLEXIBLE: It is compatible with regular hand drills and electric drills to provide superior performance. At the same time it can be easily bent, twisted and turned to reach narrow and tight spaces. 2SIZE: Hex shank bits have a 6.35mm (1/4 inch) connecting part and the internal hex head connector is also available in a 6.35mm (1/4 inch) size. 3PREMIUM MATERIALS: This flexible drill bit is made of premium plastics and steel, and utilizes fine manufacturing techniques to ensure reliable and efficient use. 4EASY TO USE: It enables your drill to reach difficult places effortlessly and get the job done easily and quickly. And the compact size makes it easy to store in your toolbox or pocket. 5WIDE APPLICATIONS: This flexible drill bit is designed for tight spaces and is perfect for tasks such as computer chassis, electrical cabinets, furniture, appliances and more!