Build fine motor skills by constructing numbers with these snap together color-coded pieces. Includes 50 pieces (30 lines and curves and 20 bolts), 5 double-sided activity cards with step-by-step directions, and a guide. # Pieces In Set: 53 Learning Skill: Math Recommended Ages: 4 Years And Up Measurements: 10.3 Width/Inches, 2 Height/Inches, 10.3 Length/Inches Assembly: Assembled Base Material: 100% Plastic Care: Wipe Clean Country of Origin: Imported