The Anatomy Lab-A-112579 Knot Tying Trainer, Emulational Type, EACHThe lifelike model allows training and practicing of comprehensive knotting techniques and vascular ligation as well as large scale training of the students. Skills Gained One handed reef knot Two handed reef knot Instrument tie Surgeons knot Extra half hitch on reef knot Tying at depth vertically in a large opening Vascular ligation