You'll need a steady hand and a keen eye to maneuver all of the tiny metal balls into their spaces with these challenging mind teasers! These 1.5" square plastic cubes features a colorful interior puzzle that can be solved over and over again -- but can you do it? Choose from a range of shapes and styles and add your school, sports team, organizational or company logo, emblem or message to create a mind-bending branded promotion. These puzzle cubes are perfect for grand openings, trade shows, seminars and convention tables and make a fun gift or giveaway for all kinds of social or marketing activities and events.,