Lock on lifter, seperate Lock on constant tension spring loaded lifter. This lifter is standard in the system, it's an extra option or add on. This is the add on puller only to connect as an extra lifter to your RE-tension system. People have been asking for a second or even third lifter to cennect to their tool. This is your chance to get an extra one. Attention so far you need an adapter to connect to the lifter to start pulling tabs. like centipede tabs from Kecotabs. The blue track adapter does not come with the puller! Pretty soon we will have adapter option to pull all sorts of your favorite tabs.