Perform a longitudinal cut for end stripping and a round cut to remove the jacket. The cutting blade- is heat treated with SK4 high-quality steel to ensure the sharpness, hardness, and toughness- of the cutting edge-. The tool includes a replacement blade-.Small size will not take up too much space in your bag This wire stripping knife is designed for electricians to cut different types of cable. It is a professional tool for electricians to handle different types of cable in their work. Length:approx 13.3cm/5.24in