Self-retracting safety knife enhances safety by retracting the blade when the button is released. Two blade positions allow for choosing the cutting depth of the blade to minimize damage from over-cutting. Tool-free blade changes save time and add convenience with easy thumbscrew access. Holds up to 5 blades conveniently inside the handle. Slim, lightweight, all-metal body takes up less space, but stands up to jobsite abuse. Wire stripper cuts up to 10-gauge wire. Lanyard hole for convenient storage. Accepts all utility blades and comes with two carton blades with rounded tips.