The bar and the hook: - Nylon coating - higher abrasion resistance. - Stainless steel band. - The tape does not break when pulled up to 1.8 m.Shape and construction: - Rubber-coated, impact-resistant body. - All metal parts made of stainless steel. - Quality torsion mechanism for long service life. - Class 2 accuracy: 2,3 mm tolerance over 10 m. - CE certification and inspection certificate ensure that the roulette is extremely reliable and accurate.The tool is used - For measuring abrasive materials. - It is suitable for measuring sharp, hard metals.