Retractable Trapezoid Blade Knife XP, IRWIN A new standard in knife strength and performance – special design provides high tool durability; One-piece stainless steel nose prevents blade play during cutting and offers high wear resistance; Quick-change blade feature – allows easy removal of a new blade and reinsertion of an old one without disassembling the knife; Easy blade installation without additional tools; Uniform 3-step blade retraction for various cutting depths; Convenient 5-blade cartridge with magnetic holder; We recommend using Irwin Bi-Metal trapezoid bi-metal blades. Material: Steel Length, mm: 235 Width, mm: 67 Height, mm: 31 Weight, g: 170