The KC Tools T40 x 30mm Tamperproof Bit (model 13769) is designed for use with tamper-resistant fasteners. It measures 30mm in length and features a T40 size, suitable for applications requiring this specific bit type. The bit is made to handle high torque requirements, making it appropriate for automotive servicing, mechanical repairs, machinery maintenance, and general workshop use. Its design supports access to fasteners in confined spaces. This bit is intended for professional tradespeople and DIY users needing reliable, durable tools for fastening tasks.