Pocket-size for convenient, everyday use on the jobsiteAllows the blade to be changed quickly and easily with the push of a buttonPrevents the blade from being pulled out during use-blade can be removed when knife is at a 45 degree angleWire-stripping notch-built in convenience for skinning wireExtended thumb ledge - allows knife to open easily, even with one hand; provides support and leverage while cuttingNew Irwin Folding Lockback Knife with easy change blade and wire stripper built in.