The trans-cutter serves for both purposes as a scissor and a knife. A scissor was made for cutting somethings with two blades, but usually we use it not only as a scissor but also a knife with only one side blade. For example, in the case we open the plastic-wrapped bottled water or beer or delivery food without damage, we spraddle blades of a scissor and tear the wrap by using only one side blade. Also we use scissors such like that ,in the case we open the delivery box attached with tape. However to use one blade of a scissor like a knife, there is the danger that the hand may be injured because it is necessary to hold the opposite side of the blade by hand, and also there is the inconvenience of catching because we may hold the blade and hanlde at the same time. So trans-cutter are designed to be used safely and conveniently while performing both cutting like a scissor and a knife, getting ideas from the sliding function of the cutter knife.