Automatic Retractable Cutters And Knife Martor Usa. Knife falls out easily when the cover is opened. Knife falls out of the sleeve completely and with blade safety switch. The easy-to-change holder accepts most large cap T-handles found in laboratories hospitals and clinics. The spring loaded holder returns the knife to the retracted or extended position automatically with a safety click. Martor Retractable Knife has two locking positions and a retracting action. This attractive cleft knife is sure to please with its strength balance fine hair and super sharpness. Automatic Retractable Cutters And Knife Martor Usa 5232