The Faithfull Turbo Auto Feed Retractable Knife features a push button blade release and automatic blade replacement system. An internal compartment stores up to five replacement blades that can be pre-loaded into the knife ready for use. Replacing a worn blade is simply done by pressing the blade release button to remove the old blade and sliding the blade carrier back into the knife, the new blade will then be loaded into the blade carrier ready for use. A spring action carabiner type belt clip is provided for easy storage. Supplied complete with five blades.