Slacker is a patented system that allows anyone to easily set their suspension up with no assistance. This precision tool takes measurements using a rugged retractable cable and attaches to the bike with a super strong magnet. It includes a universal clip to hook the retractable cable on, which can also be attached to the back of the main unit for easy storage. The quality of this tool is incredible, Slacker is worth every penny! The Slacker wireless remote shows all the measurements in real-time, right on the handlebars so you can easily make your own adjustments whenever you want.