... and valve closing very easy Item No Description PCS/SET/CTN YS26001 8F, Screw Type, Sideon Female Luer 512 YS26002 8F, Screw Type, ... Sideon Tubing and Stopcock 512 YS26003 8F, Screw Type, Sideon Female ... Tool and Torquer 512 YS26005 9F, Screw Type, Sideon Female Luer 512 YS26006 9F, Screw Type, Sideon Tubing and Stopcock 512 YS26007 ...