one handed activation via multiple methods (finger, thumb or surface) enables safe delivery of medication. Safety shield covers entire needle. Integrated engineering incorporate safety device as an integral part of the needle hub in conformance with OSHA standards, eliminating the possibility of removal. 50/Bx 10Bx/Cs #882712-27Gx1/2" #882812-Permanent Needle 28Gx1/2" Latex Free UNSPSC#42142611