Known for their high-quality precision components and easy construction, KEVA kits set the bar for learning and fun. Pre-drilled pine planks, with no tools required. Prepare to measure, construct, launch and bombard, sending the two balls (or marshmallows or ping-pong balls) flying toward the target! From Mindware Inc, for kids ages 7-12. WARNING: CHOKING HAZARD - Small Parts. Not for children under 3yrs.