To use, place grinding compound on valve face and put in the seat
SP Hand Tools are covered against manufacturing defects or faulty materials. This warranty does not cover overloading, abuse, misuse, and/or normal wear and tear. All SP Hand Tools are designed and manufactured for specific purposes and if not used for that intended purpose they will not be covered by the lifetime warranty. Exemptions - All measuring equipment (12-month warranty), battery-operated wrenches (24-month warranty), striking and cutting tools (6-month warranty).