Notched Half Unit Blocks connect together with Unit Flats to create a whole new level in block play. This 100 pc set includes both notched blocks and Beka's Standard Unit kindergarten sized Blocks including: 16 flat unit blocks and 8 notched ½ unit blocks, 10 Small Triangles, 6 Columns, 6 Pillars, and 24 (½ Pillars, 6 unit blocks, and 24 (1/2 unit) blocks. . Available in 100 pc, 50 pc and 18 pc sets.