The Sidewall Seal Kit was designed to patch slices or punctures on the sidewall of your tire. Slightly thicker than the External Patch Kit and with more surface area, the Sidewall Seal kit is designed specifically for larger damage. The Sidewall Seal Kit is ideal for repairing any large sidewall damage. With enough material to patch 1-4 tires, this kit is great to keep in your truck, tractor, ATV or UTV.