HIGHER HARDNESS AND BETTER ABRASION RESISTANCE: Our t shaft electric wrench conversion tool is made of chrome vanadium alloy steel, which has higher hardness and better abrasion resistance than other materials; Able to work under high load and pressure conditions without deformation or breakage HIGH COMPATIBILITY: Electric wrench four square sleeve shaft is compatible with hex shanks, hole openers, batch heads, sockets and other adapter heads; The 10mm diameter and 5mm depth slot at the end can be adapted to connect with electric spanners according to the hole depth diameter; It can easily meet your needs for drilling, screwing, wrenching and other scenarios UPGRADED DESIGN: Upgraded design on the original shaft conversion head; Compared with the original electric wrench conversion head adapter with multiple connection points, resulting in severe shaking during use, our electric wrench shaft part is designed with a single connection point that is much more robust; It can also be used with a hexagonal handle, which is more versatile than the original STRONG MAGNETIC ADHESION: Built-in strong magnet, can stably adsorb the batch head to prevent falling; Strong bite and flexible fastening; Suitable for quick change 1/2'' chuck systems or directly into drill chuck; This conversion head for electric screwdriver is perfect for your impact driver or drill PRACTICAL TOOL: Simple and easy to use, supports quick installation; Small size, easy to carry; Suitable for electric wrenches, impact drill spanners, can be used with sockets, screwdriver bits, electric drills and other accessories to save your cost and improve efficiency