Use with 18" or 26" Midwest Rake EasySqueegee Frames (78255 & 78256) Intelligent Blade Identification: All blades inscribed with WFT and WFSR Information Self-Leveling Blades: Accurate and predictable Wet Film Thickness every time Self-Locating Blades: Designed to provide industry leading accuracy Protected Threads and Fasteners: Eliminates material contact with threads Steel Thumb Screws Replace Nuts: Features Cured Coatings Release Technology for cleanability