Sandpaper, 2 X 2'', Pack Of 4

Details:

Sandpaper, 2 x 2", is a component of the following stc program unit(s): magnets and motors (item #973401); working with motors and simple machines (items #976101, #976101u5); electricity, waves, and information transfer (items #512801, #512801u5). It is also a component of the following building blocks of science unit(s): my senses (item #933061).