All Metal Zinc Knife Body Construction. Screwdriver Required For Blade Change. With Hang Hole. Includes 3 ea 11-921 Blades. 1 Fixed Blade Position. Works With 11-911, 11-921, 11-931, 11-961, 11-983, 11-937, 11-938, 11-939, 11-987, 11-942 and 11-980 Blades.