OEM Medical Stainless Steel Straight Shank Hair Transplant Implant Needle Products Name OEM Medical Stainless Steel Straight Shank Hair Transplant Implant Needle Material Stainless Steel, Brass, Aluminum, brass, copper ,etc Surface treatment Sandblasting, polishing, knurling , laser marking, etc Tube Outer Diameter 0.25-15mm Tube wall Thickness 0.05-3mm Meta Base Male and Female thread Tolerance OD/ID±0.02mm L±0.05mm or According to Drawing Size 3G-32G or Customized LOGO Can