Stainless steel tru-cut biopsy needleMaterial: Stainless steel 304/316,Website:http://www.bending-tube.com, brass, Aluminum, etcTolerance: +/-0.001mmProcess: flaring, swaging, engraving, bending, side opening, welding, grinding, etcSize: According to your drawings or samplesOEM/ODM is availableIf you want to learn more, please feel free to contact me.