VIAHART Counting Connectors 145 Piece Snap Cube Math and Building Set Mathlinks Every Jar Has More Than 140 Pieces! The snapping cubes measure 3/4 in (2 cm) wide! Great for Teaching Math! | Excellent Value | Hours of Play and Tons of Awesome Creations! Teaches Spatial Thinking | Engineers Start Here! Give Your Child The Skills Today! SIZE AND WEIGHT | Product Measures 5 x 5 x 8 in inches | 12.7 x 12.7 x 20.4 in centimeters | Product Weighs Approximately 1.5 lbs / 0.7 kgs | These dimensions and weight do not include the packaging 30 day no questions asked return policy and FREE returns!