Feature: Silicone gaskets are odorless and easy to replace, making them superior to rubber gaskets. These gaskets retain the strength of rubber gaskets while easily forming a good seal. The gasket determines the handle's "lock" position. Ideally, you want the handle to lock directly in front of you (between 5 and 7 o'clock). If the gasket is too thin, the lock will be too deep. If the gasket is too thick, the lock will not be sufficient. Specification: Material:Silicone Color:Black Package content: 4PCS Notes: 1. Due to manual measurement, please allow an error of 0-1cm. Please make sure you don't mind before bidding. 2. Due to the difference of different monitors, the picture may not reflect the actual color of the product. Thanks!