BD Vacutainer® Safety-Lok™ Blood Collection Sets. Blood collection and infusion set with luer lock adapter Manually activated safety shield to fully cover needle Shields healthcare workers from exposed needles Yellow transparent shield locks into position, creating a barrier between healthcare worker and used needle The slim, easy-to-handle design enhances control and flexibility Large wing size permits improved positioning during use Minimized coiling of tubing facilitates handling Blood flashback is seen clearly through translucent shield Convenient, integrated multiple sample luer adapter allows specimen collection from a closed system, further enhancing safety in use