- HUB SEAL INSTALLER KIT ADVANTAGES: This seal installer kit is expertly engineered to facilitate easy seal installation, whether on or off the vehicle, minimizing damage to surrounding parts during routine maintenance. The kit comes with 5 specialized drivers and 2 handle extensions, allowing for effective installation of seals on hubs with deep brake drums without the need for drum removal. - BROAD COMPATIBILITY: The 61850 truck hub seal installer kit is compatible with a wide range of popular sizes for Class 7 and 8 over-the-road trucks, trailers, as well as some medium-duty trucks. Driver sizes included are: 4-13/16'', 5-11/16'', 5-31/32'', 6'', and 6-5/16''. For optimal performance, use a rubber mallet to tap lightly during hub bearing seal installation. - SIMPLE OPERATION: Easily connect the drive to a compatible handle, then insert the included hardened washer between the drive and handle to safeguard the aluminum driver from wear. - EFFICIENT TOOL DESIGN: Utilize the tapered side of the driver for bearing races and flip it to the flat side for seals. The design ensures that installation is straightforward and effective, enhancing your maintenance efficiency. - USE SCENARIOS: 1. Ideal for truck maintenance shops that handle routine brake drum servicing. 2. Perfect for fleet maintenance professionals needing to ensure quick and safe wheel seal changes. 3. Useful for DIY mechanics looking to perform hub seal installations without compromising surrounding components. This specific focus on durability, ease of use, and compatibility makes the 61850 truck hub seal installer kit an essential tool for your automotive maintenance needs.