The BD Vacutainer Safety-Lok Blood Collection Set with Preattached Holder is ready to use right out of the package, with no assembly required. The BD Vacutainer Safety-Lok Shield enhances safety yet requires no change in technique. 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.