1 1/2" - Add a touch of classic fun to your next promotional or advertising campaign with the nostalgic appeal and hours of fun that come with this Rubik's (R) 4-panel stock cube. This simpler take on this classic toy features four panels per side for an easier puzzle solution that doesn't skimp on its promotional punch with a total brand over four panels and a per panel branding option. And, since this 90% plastic product uses only pre-consumer recycled plastic materials, raising your brand's green profile is easy. Enjoy a lifetime guarantee and QCA certified supplier. Order now!