Bergman Auto Craft Leaf Spring Relocation Kit With Sliders and Delrin Bushings

Is the slider the only difference between your kit and the USCT kit? I bought the USCT kit on here about 6-7 months ago, but might be in on yours if you can explain the differences, please. thanks rick w.
@BergmanAutoCraft
Could be wrong but I believe the USCT kit is a 3" relocation, the BAC kit is a 1/2" offset