Feature: 1.Save glass replacement cost and maintenance time. 2.No need to disassemble, convenient, quick and easy to operate. 3. Prompt maintenance can prevent crack propagation to ensure safe driving. 4.The repaired windshield is not worse than the original windshield, and its transparency can reach about 95 Percent. Specifications Shelf life: 3 years Net content: 3ml Storage: Please store in a cool place How to use: Step 1: Clean & dry the damaged surface of glass. Step 2: Inject the glass repair fluid into the crack area. Step 3: Lay the cured film on the crack area. Step 4: Scrape off the excess glue. Package Includes 1 pc x Car Windshield Crack Repair Fluid.