The SL 3 is a complete offroad survival kit in one lightweight, compact unit. Features: 3" 50/50 serrated blade, loud emergency signal whistle, and magnesium alloy firestarter. Firestarter is contained in a sleeve attached to the top of the handle. It's rated for hundreds of strikes and will throw off a shower of intensely hot sparks even when wet. Perfect for rugged outdoor sports and survival applications. Weight: 3 oz. Dimensions: 3"L, blade; 4"L, closed; 7"L x 1.75"W overall. Blade thickness: 0.75".