Immediate shielding w/permanent needle lock. ETO-sterilized, blister packed- color coded. Safety mechanism via audible ‘’Click’’ sound when shield is pushed forward and turned in either direction. Easy to read marking. Smooth plungermovement. All 100/Bx 10Bx/Cs #2107-28gx1/2 #2108-27gx1/2 #2109-25gx5/8 Latex Free UNSPSC#42142611