it is very useful for car washing; 
Safely and easily removes rail dust, tar, bugs, and paint over spray from automotive paint and glass surfaces It is BETTER THEN CLAY Quite possible the best substitute for traditional hard to use products. Finally a alternative to detailing clay products that actually works better, easier, and more effectively. MAGIC CLAY PAD can be used on a lot more then painted surfaces, from glass to chrome and wheels MAGIC CLAY PAD is awesome
spec. of item please check picktures
and all materal are comfirm ROHS and have MSDS report support.