The Stanley knife has a cast metal body and is available in both a retractable version and a fixed blade version with no depth adjustment. There are several versions of the classic Stanley No. 99 retractable knife. The Stanley 99E fixed-blade knife model is widely used for construction work. This knife, like other utility knives, has a place in the handle for storing spare or used blades. We offer Stanley knives of models 99E and 199E.