accu-chek safe-t pro uno 200 lancets (single use disposal most hygenic lancets) accuchek safe-t pro expiry 2020. product description safe-t-pro single use lancets, completely disposable lancet designed with safe-t-wing tabs positioned in a t-shape. when the blue trigger button is pressed to obtain a sample, the safe-t-stix spring-loaded firing action breaks the lancet wings to provide a superior fail-safe against reuse. for added protection, the lancet permanently retracts into it's protective case after use to prevent accidental needle sticks and cross-contamination during disposal. 23g x 1.8mmd.