The industry's most adaptable safety needle with three ways to activate and a broad range of sizes. Add separate thumb and finger grips, unequalled sharpness, as well as, ease of use and simple standardization that make everyone comfortableAdditional Benefits:- 3 modes of activation-thumb, finger, or hard surface- Separate finger/thumb grips with ridges and nonslip surfaces- Hub and needle locks for security post activation- Broad range of sizes- Sharpest needles among major brands tested