Poorboys Clay bars are easy to use and an essential tool of the professional or enthusiasts. Clay bars remove contaminants from many types of finishes and leave a smooth and easy to maintain surface. Use them on paint, glass, plastic, chrome, aluminum and many other surfaces. They remove over-spray, sap, tar, rail dust, as well as minerals left from rain (acid rain). Removes contaminants such as tar, bug remnants, railway fallout, brake dust and anything else invisibly coating your cars paintwork. Poorboys World Clay Bar is a flexible, long-lasting, synthetic clay resin Use with Poorboys Clay Lubricant.