Quick Products Replacement Bubble Level Cap For Electric Tongue Jack Black. These Trailer Parts by Quick Products will help maintain the levelness of your trailer by keeping harmful moisture out of the electronics. Don't worry if you need this part to work properly; it's easy to install and does not require any tools. Simply pop off the existing cap and install the Quick Products Electric Tongue Jack Bubble Level Cap. The installation process only takes a few minutes and there is no risk of tools breaking. Reinstall the Quick Products Electric Tongue Jack Cap and its O-ring by yourself for a reliable way to keep your electric tongue jack in place. No tools required for installation. Features of Quick Products Replacement Bubble Level Cap For Electric Tongue Jack Replacement bubble level cap Includes O-ring No tools required for installation Color: White Package Contents: Quick Products Replacement Bubble Level Cap For Electric Tongue Jack Quick Products JQ-RLB: Replacement Bubble Level Cap For Electric Tongue Jack Black