Using the C.K Automatic Wire Stripper Pro T3943 is a breeze. First, turn the tool on if it's powered. Then, place the cable you want to strip into the appropriate slot. Thanks to the automatic wire size adjustment, the tool will quickly strip the outer and inner insulation. For both flat and round cables up to 6mm, just position them correctly and let the stripper do its job. When using it, make sure to hold the tool firmly by the contoured handle for a better grip and control. Don't try to strip cables that are larger than 6mm as it may damage the tool. For maintenance, regularly check the cutting blades. If they start to wear out, replace them with the provided stainless - steel ones. Also, keep the handles clean and dry to maintain their shatterproof quality. Store the wire stripper in a cool, dry place when not in use.