Safe, quick and easy to use. Single-handed use keeping hands out of harms way. Self-contained waste disposal system. Use with blades from handles #3, 4, 5, 7 and 9. Blade fully contained upon removal, eliminating injuries to downstream staff. Sealed, spill-proof, puncture resistant container eliminates the concern of contamination. Reliable shut-off mechanism (when full) eliminates jamming or mechanism failure due to overfilling. 100 blade capacity, each device, every time. Sturdy container, will not break or spill contents. The device is manufactured using puncture resistant materials, ABS (acrylonitrile butadiene styrene), also environmentally friendly. New stronger stainless steel mechanism inside. Manufactured to exacting quality control standards - ISO9002 and ISO9000.