DM before purchase please, so i can take boost off !! Mega Cyborg Hand STEM Experiment Kit #stem #science #engineer #fun #learning This is the Thames & Kosmos Mega Cyborg Hand, a STEM experiment kit designed for ages 7 and up.The kit allows users to build a wearable, giant mechanical hand that operates using hydraulic power from water rather than motors or batteries.It includes 203 pieces to construct a 16-inch hand with fingers articulated at three points for gripping capabilities.The hydraulic system is configurable to fit either the left or right hand and is adjustable for different sizes