The Sparkle T Magnetic Butterfly Gear has a knob that children turn to make all of the gears turn and interlock. It has a magnetic back - it can attach to the fridge or a magnetic board, so can be used upright in addition to being used flat on the floor. Great for co-ordination skills. Size: 20*17*1.5cm. Minimum order for wholesale customers is 4. Price is for 1 unit.