Ding! Ding! Jab, dodge, uppercut! Put your mitts together for Kangaroo-Bot and Robo-Boxer! These boxing robots use hydraulic power to move like real boxers.

Packed with the excitement of a boxing match and the fun of constructing incredible mechanical models, this science kit for kids allows you to build two boxing robots and challenge a friend to a match. Knock your opponent robots head backward and score a point on the included scoreboard.

Learn about how these amazing machines and hydraulic systems work. Leave the rocking and socking to the lightweights, this awesome STEM kit really packs a punch!

• Ages 10+.

Thames & Kosmos was founded in 2001 by a science museum director and her son, who saw the great need and demand for better science education materials resources for parents and their children that are more engaging, more effective, more relevant, and more fun.