Using the GearWrench 82812 tap and die set is straightforward. First, pick the right tap or die for your project from the 48 taps and 48 dies included in the set. Attach the tap or die to the appropriate adapter. The ratcheting handles and adapters make it easy to turn the tap or die back and forth while cutting threads. Just use the reversing lever to change the direction of the 5° ratcheting arc. When working with the die adapter, it can be used with both round and hex-shaped dies. And it's also compatible with Pass - Thru ratchet and socket systems as well as Vortex socket accessories. For tight spaces, use the extension adapters. As for safety, the auto - locking feature helps you safely remove the tap adapter, and the spring - loaded cap on the large tap adapter allows for quick release. When it comes to maintenance, after each use, clean the taps and dies with a soft brush to remove any debris. Keep the set in the provided blow - molded case to prevent damage and keep everything organized. And since it has a lifetime warranty, if you encounter any problems, you can get it sorted out. Just make sure to follow the ANSI, ASME, DIN, and Federal specifications while using it.