Similar to standard utility knives, the Allway Tools model SRK is designed with additional features to reduce on the job injuries and accidental damage to merchandise and material. The spring-loaded blade is exposed only when the slider is pushed forward. While the knife is cutting through a box the blade remains in the cutting position. As soon as the cut is completed the blade snaps back into the handle. Box contents are further protected by the short blade (3/8") exposure and the round point blade. Only the cardboard is cut, the inside remains untouched.