Knipex Self-Adjusting Insulation Strippers are indispensable for the electrical contractors and installers. They are fast and reliable and cover a wide range of applications. Designed for single, multiple and fine stranded cables with plastic or rubber insulation. They adjust automatically to cable cross-sections to prevent damage to conductor. Cutting depth can be manually adjusted for different insulation materials and thicknesses. features adjustable length stop of 3 - 18mm. Smooth operating mechanism and light weight make these tools easy to use. made from tough fiberglass reinforced plastic.