Using your Cougar Pro socket is easy. First, make sure the 3/8 - inch drive of the socket fits well with your ratchet or other compatible tools. Then, select the nut or bolt that matches the 19mm size of the socket and start turning to tighten or loosen it. When using, avoid applying excessive force suddenly as it might damage the socket or the tool you're using it with. Also, don't use the socket in wet or extremely dirty environments to prevent corrosion. For maintenance, after each use, wipe the socket clean with a dry cloth. If it gets dirty, you can wash it gently with mild soap and water, then dry it thoroughly. Keep it in a dry place when not in use to extend its lifespan.