Marson Klik Thread-Sert kits eliminate the need for tapping, welding, and brazing. They are designed to be used with metal or any other rigid material at least 3/32 in. thick. The Thread-Serts consist of an upper sleeve that is threaded inside and a tapered base. When the base is drawn up into the upper sleeve, the sleeve is expanded, forcing 360 degree contact with the surrounding material. The kits make quick work of what could be a complicated and frustrating job.