The Stanley 0-10-819 FatMax Xtreme retractable knife has a die-cast aluminium housing combining maximum strength with amazing lightweight properties. E xtra-large handgrip and the diamondshapedtextured handle provides a sure-grip whatever the conditions. Holds up to 15 blades or a dispenser of 10 blades. Chunky dial allows you to control the width of the knife opening, giving you a sure feelwhen using extra heavy-duty blades. Spring-loaded swivel opens the knife wide for quick and easy blade change. Plus the magnetic nose holds the blade in place whilst its being changed. Retractable blade.