Cleco 19 Series Inline Screwdrivers, Push-to-Start – Push Button Reverse features a lightweight and durable ergonomic handle that is designed with the operator in mind. Cleco 19 Series Inline Screwdrivers, Push-to-Start – Push Button Reverse features an external torque adjustment. Cleco 19 Series Inline Screwdrivers, Push-to-Start – Push Button Reverse also features a 1/4” quick change chuck.