Chemical Guys CLAY_BLOCK_KIT Clay Block V2 and Luber Surface Cleaner Easily removes rail dust, water spots, tar, bugs, and paint over-spray from automotive paint and glass surfaces Will not strip or remove wax or sealant protection No harsh abrasives that scratch Easy to grip design 1 bar will do 15 to 25 full size vehicles The date listed on the product is the manufactured date of the product