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non-slip stair treads
Ages 18 months+
each runner measures 64"L x 13"W
STEM lessons and architectural design using the Unit Block Marble Run - 40 pc
Arches Unit Block Bundle - 16 pc. set Storage non-slip stair treadsExpand foundational unit block sets with just the pieces your builders need more of. Made to align with the same mathematical dimensions as traditional unit blocks, these add on sets are designed to be used as an enhancement to foundational sets.
