S4 is fine tuned to make box cutting easy, safe and comfortable The guard also serves as a guide for executing the perfect cut every time, turning even a new-hire into an expert cutter instantly The unique angle of the blade is set specifically to avoid damaging the contents within the box For better retention, use with corresponding UKH-423 Safety Holster and CL-36 LanyardFeatures The fixed steel guard will not flex, bend, or break like other cutters and is designed to protect the user* The versatile S4 has three blade depth positions to increase efficiency; Top cut, shallow tray cut and deep cut* Users also find that utilizing the heavy duty tape splitter while opening boxes further prevents injuries and extends the life of the blades Comfortable ergonomic design Tool free blade change Includes one SP-017 Safety Point Blade Holds 5 additional blades* The S4 Safety Cutter is sold in green for right-handed users and red for left-handed users