From this product, I am more than disappointed. The material from which the "needles" are is not even specified, it must be obtained from at steel as DRS offers its own Titan Roller. Since I myself have a lot needling Erfarhung (0.5mm -2 mm), I can only expressly warn of this product: the needles are rather lancets (conical and flat) which are arranged in rows with very closely spaced to each other, arise during rolling scratches that as heal abrasions - something I had for a needling never and such wounds should not occur. Dear get a scooter with real thin needles. Since uses the return is excluded.
