The T blade is made of carbon steel and self sharpening ceramic,it's very sharp to cut your hair off,and also ideal to use for your beard shaving and body hair shaving without hurting your skin,especially used for lineup hair style design . The outliner trimmer is designed with corded&cordless charging ways,designed for easy fading and bleading,the cordless design is conveient for you to carry with during your travel or for home use without taking risks to get out for cutting your hair or beard. T shape trimmers are not only used for cutting your hair,but also used for removing your beard,the hair under your arms , your hands,legs,or your body hairs,it's widely used for men women children or elderly. The ergonomic slim body design makes it easy to handle with ,the all metal body design makes it sturdy and durable to use compared with traditional plastic hair clippers for its excellent cutting experience. 4 GUARD COMBS AND ACCESSORIES: it comes with 4 premium ABS limit guard combs,1/16'' 1/8'' 1/4'' 3/8'' ,including charging cable.