4 Color - .030 Thickness - Trying to solve the enigma of a successful promotion? These jumbo business card puzzles could be the solution! Approximately 0.020 of material thickness and always-in-stock, these magnetic promotional giveaways can be customized with your company name, logo and/or contact information. Something a little different for handing out during networking events! WARNING: Choking hazard - contains small parts. Not intended for children.