Features: *Brand new unused *Easy to install and easy to use High hardness, wear-resistant and anti-corrosion,high torque. *For electric wrench socket bit set *You can choose T20/25/30/40/45/50/55 *Length 30mm and bottom 10mm Specifications: Name:electric screwdriver bits Size:30MM Model：T20/25/30/40/45/50/55 Material:Metal Uses: electric wrench socket bit set Package Included: 1* screwdriver 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. Made of high quality material, durable and practical to use. Perfect functions,give you a wonderful experience. We will ship it ASAP,when you place the order. If you have any questions, please feel free to contact us, we will solve it for you. Every customer can enjoy 30 days refund or replacement for Damaged/Quality Issues.