Using the Joker 6004 self - setting spanner is a piece of cake. First, identify the hexagon bolt or screw you need to work on. Place the spanner on it, and the automatic adjustment feature will do its job to fit the size. For screwdriving, simply use the mechanical ratchet. Push or pull the spanner in the right direction, and you can drive the screw without taking the tool off. When using, make sure the spanner is properly placed on the bolt or screw to avoid slippage. Don't use excessive force as it may damage the tool or the part you're working on. To maintain the spanner, keep it clean after each use. Wipe off any dirt or grease. Store it in a dry place to prevent rusting. This way, your Joker 6004 spanner will serve you well for a long time.