These new parking blocks are made of the toughest plastics known to the industry. Durable Super Saver Blocks will not chip or crack like concrete blocks. Super Saver Blocks save you time and money because they can be transported and installed by one person or, if you prefer, S.A.M. will install the parking blocks for you. Available in gray, yellow, and blue. They never need painting! These parking blocks will out last any concrete block and looks great for years.