All cannulas are made from medical grade highly polished steel, both internal and external, to prevent or reduce blocking of the cannulae and also to reduce friction injury to the skin.  

Cannulas are available in a wide variety of widths (ø mm) from 1.45mm diameter or 17g through to 3.50mm or 11g and in a wide variety of lengths from 85mm to 300mm. Cannulas have a wide variance of tip styles, holes and layout, we can also customize the cannula as your drawing or sample.