A robust and reliable snap-off knife is comfortbale to use. The unique smart designed button makes it easy to feed out and lock the blade with a single hand. Ergonomic design with a clear fingertip and a tapered tip ensure an excellent grip when measuring and cutting plasterboard in one motion. Particularly long and stable blade support prevents blade breaks during the work phase, which increases safety. The knife contains a few parts so it is easy to open for cleaning and blade replacement. One push is enough to open the new blade , including the last blade.