ZETA and DRC products are distributed over 50 countries now. They ride dirt bikes. They develop products for dirt bikes. They test, manufacture and supply high quality products for dirt bike riders. Allows you to measure suspension sag by yourself easily. Compact design, it does not take much space in your tool box. Measure front and rear suspension sag easily with this kit. Clamp comes with rubber and will not damage your plastic fenders or side panels. Clamp anywhere on side panels, rear fender or sub frames, to measure suspension sag.