... customers * Large closing knob makes twisting and valve closing very easy Item No Description PCS/SET ... Luer 512 YS26002 8F, Screw Type, Sideon Tubing and Stopcock 512 YS26003 8F, Screw Type, Sideon ... and Torquer 512 YS26004 8F, Screw Type, Sideon Tubing and Stopcock, Insertion Tool and Torquer 512 YS26005 ... Luer 512 YS26006 9F, Screw Type, Sideon Tubing and Stopcock 512 YS26007 9F, Screw Type, Sideon ...