Janser Green box Super hooked Blades RWS048A these popular deep hooked blades come in 100 blade boxes, sub divided into 20 blades per plastic dispenser, great for holding these deep hook blades together in the carpet fitters tool box. These super hooked blades are made in Germany of high quality steel and are popular with carpet fitters as these super hooked blades are reputed to have a longer cutting life.They will also fit standard pattern knives including Dolphin knives and dolphin style knives.