Customized Step-Down Tube With Different Diameters Products Name Customized Step-Down Tube With Different Diameters 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 be customized according to your drawing