Knives include a 3/4" wide grip handle and a Phillips screw to secure the blade. Extra blades can be stored in the handle. The LK14 is 14" (355mm) long, LK18 is 18" (450mm) long, and the LK24 measures 24" (600mm) long.  Made of aluminium with a steel retaining block for the blade. Uses all standard utility knife blades.
 
LK14
LK18
LK24