Unit Blocks are based on a unit measurement of 1.25" giving uniformity of measure for easy building. Our Large Sets accommodate large groups or several classrooms.
Choose from :
- 170 piece set with 29 shapes in 2 boxes.
- 340 piece set with 29 shapes in 4 boxes.
Basic Unit Block: 5.25"w x 2.75"d x 1.25"h. Ages 2+ with Adult Supervision Recommended. Color may vary. Image is representative only, not exact.