Masterkidz STEM Wall Hand PumpThe Masterkidz STEM Wall Hand Pump is a dynamic and interactive resource designed to bring water based STEM exploration to life. Specially created for use with the Masterkidz STEM Wall (sold separately), this hand powered pump can be mounted either vertically or horizontally, offering flexibility in setup and function. When used in conjunction with the Masterkidz Wall Pipe Builders Set (MKZ13064) (sold separately), students can create closed loop