This load stick bolts in where your shock goes on a shock separate suspension. The stick allows you to change springs with ease and accuracy, along with being able to pull the race car down to dynamic attitude to find a suspension bind and to use on jack stands to adjust your compressed loads. This is our ratcheting version. Compressed center to center is 13-1/2" and extended is 19". To use in place of 9" shock, use a WM251-23 slider extension. Available in the accessories tab. Comes with charger for load cell and hard case to store safely.