Stripping Size Range: Works with single-conductor 11 to 20 AWG( 0.5mm²-4mm² )stranded or solid wire,the wire tool is great for stripping speaker wire;Fix strip length according to requirements,working on many wire types. Solid and Durable: Made of high hardness steel strips and glass fiber nylon, sturdy and durable.Suitable for stripping wire;Cutting off copper,cable and aluminum wire.Notice: Please do not use to cut the steel material. Improved Design: It has self-adjusting jaws to strip wire and no need to manually readjust this stripping pliers. It works with fine, thick single, multi-stranded conductors, PVC, and other insulation types. Light and Portable: The automatic wire stripper is only 139g with a compact size, you can bring it to everywhere easily. Position-Limit Function: Stripping length range is 5-20mm, you can fix the stripping length according to your needs, the precision blade stripping is not easy to damage the core wire., Manufacturer: APTTOOL