The blades are virtually unbreakable, and have a quick blade change feature, spring-loaded push-button opener. It is designed to fit the hand, allowing maximum grip, and minimum wrist distortion.<br />The blade slider is held permanently in place whilst a magnet holds the working blade in place. Spare blades are held securely so there is no edge damage, and no rattle, featuring a hinged opening mechanism.<br />This knife has an optimised cutting angle to minimise fatigue and includes magnetic blade retention, and storage for up to 5 blades.<br />Patented quick blade release for easy renewal of sharp blade edge.">