PB 3341074 Black Neoprene Rear Squeegee Support Blade for Minuteman Power Boss 50 Series Scrubbers. Neoprene is used in cases where the standard duty tan gum blades won't hold up and distort. Neoprene blades are naturally chemical and oil-resistant and can be used in food processing plants, chemical plants and areas where tan gum blades might be affected by chemicals. They are also naturally chemical resistant and can be used where caustic chemicals exist. Durable black neoprene is chemical and oil-resistant. This blade acts as the support blade to the rear squeegee on the Minuteman Power Boss 50 Series scrubbers which include Core 50, 5500 and 5550 models. Used in conjunction with 3341076 (rear) and 3341964 (front). Priced Each. Replaces Minuteman Power Boss 3341074