Well if you dont wanna spend the $40 for the Ultima kit or $20 for the same block from Chemical guys I found this today browsing around Amazon
[ame=http://www.amazon.com/gp/product/B002K74P5W?ie=UTF8&seller=A296LNWI5OS5MR&sn=Candie%27s%20eStore]Amazon.com: Auto Detailing Contaminants Removing Block Magic Shine Eraser: Automotive[/ame]
[ame=http://www.amazon.com/gp/product/B002K74P5W?ie=UTF8&seller=A296LNWI5OS5MR&sn=Candie%27s%20eStore]Amazon.com: Auto Detailing Contaminants Removing Block Magic Shine Eraser: Automotive[/ame]