Product code: Knex buying Education Simple Machines Gears & Levers & Pulleys Sets STEM
2 Sets of educational STEM building K'NEX sets. Gears, Pulleys & Levers. I went through most of the pieces. All of he uncommon and they are complete with instructions. buying The levers and gears comes with a CD. Great for boys and girls. See pictures for condition.
2 Sets of educational STEM building K'NEX sets. Gears, Pulleys & Levers. I went through most of the pieces. All of he uncommon and they are complete with instructions. buying The levers and gears comes with a CD. Great for boys and girls. See pictures for condition.