Mary Jane Automatic Knife Small w/ Safety LockMarijuana Automatic Knife Small Switchblade with Safety Lock. A handy pocket knife for a person on the go. The Mary Jane Auto is lightweight, compact, and without the extra bulk. Great for slipping right in your pocket, vest, or bag. The drop point blade is constructed of stainless steel with a satin finish. The handle is double walled with Marijuana acrylic scales and a steel frame. To deploy the blade, just press the button and watch the magic