The nozzle tips offers up to 100% more cleaning power than conventional fan jet nozzles, this makes it perfect for cleaning asphalt, concrete, metal, stone and tile flooring. With an all Brass and stainless steel construction, these turbo nozzles help in reducing cleaning time by utilizing the rotary action of an 0° stream and a wide angle spray pattern, giving you the power you need and the coverage you want. Color difference between Spray Nozzles Tips: 0 Degree (Red, Stainless Steel, Concentrated Pencil Jet) High Pressure Nozzle, 15 Degree (Yellow, Stainless Steel, High Performance) High Pressure Dirt Removal, 25 Degree (Green, Stainless Steel, Multi-Purpose) Lower Pressure Brick Cleaning etc. 40 degree (White, Stainless Steel, Sensitive Surfaces) Common use Such As Car Cleaning etc.