Owen Mumford Unistik-2 Lancet 21g 2.4mm (AT0702). To sample blood safely, simply and successfully. the Unistik 2 feature unique single-use mechanism to avoid needlestick injuries and prevent cross-infection, and a side firing action to provide extra comfort for both patient and professional. This 21G safety lancet is for normal skin types and standard tests. 100/BX. Priced per box.