The Medoc Retractable Safety Knife from Abbeon Cal Inc. offers easy grip activation and automatic blade retraction. Other features include ergonomic design, reversible blade and handle lock. Visit www.MedocSafetyKnife.com for a video. Try it risk-free; if not satisfied after five days, return for a refund. Abbeon Cal Inc.,www.MedocSafetyKnife.com, 800-922-0977.