This auction is for a 6061 aluminum CNC machined IFP depth setting tool.It is compatible with FOX shocks and functions as a replacement 803-00-566.The tool locks onto the 2021+ FOX X2 IFP for removal and is also compatible with all other X2 models, X, DPS, and DPX2 shocks where FOX tool 803-00-566 fits.To use, set a dial caliper to the desired measurement, slide the collar down to the tool, tighten the set screw, then push the IFP down until the collar contacts the shock body.The tool has a working range of 3.2 inches to 0.830 inches.