Diamond Nano Blocks, SainSmart Jr. 4 Pack Musical Instrument, Electronic Organ Violin Piano Jazz Drum, DIY Micro Bricks Educational Toys [BALCK FRIDAY DEALS] Micro-sized building blocks will enable you to execute even the finest details like never before A 3D work of art that fits in the palm of your hand, create details with assorted sizes and colored pieces. Collect, build and display your works of art. Mini bricks mere millimeters in size, Manufactured to the highest tolerances for a secure fit Includes detailed colorful instructions.