These are shock rebuild seal kits from Schmidty Racing Suspensions to rebuild King Shocks. These seal kits come standard with the upgraded (Viton) shaft and IFP o-rings. Each kit includes dust / wiper seals, oil seal, viton IFP o-rings, viton shaft o-rings, endcap o-rings, bypass tube o-rings (if applicable), and seal head o-rings to rebuild one (1) shock. Available in different sizes.