Multifunction:With self-adjusting jaws to strip wire, there is no need to manually readjust this stripping pliers. It works with fine, thick single, multi-stranded conductors, PVC, and other insulation types. Stripping Size Range:Works with single-conductor 7 to 32 AWG( 0.03mm-10mm )stranded or solid wire,the wire tool is great for stripping speaker wire;Fix strip length according to requirements,stripping length range is 5-20mm/ (0.25-0.75inch),workingon many wire types. Improved Design:The grip reduces stress and tension on the hand and wrist and makes for easy stripping. The steel clamping jaws ensure a strong grip on the wire and that it won't slip or skid as you strip or cut it. Notice:Do not use to cut the steel material