This set of Interlocking Cubes includes 1000 pieces in 10 bright colours. They are a wonderful tool to teach operations, sorting, graphing, perimeter, area, volume, patterns, chance, weight, and measurement. Set includes: - 1000 x Interlocking Cubes Age: 5 Years + Item size: Each cube measures 1 cm Material: Non-Toxic Plastic Warning: CHOKING HAZARD-Small parts. Not for children under 3 years EDX products are tested for compliance with EN71, ASTM and CPSIA standards. All EDX products meet the ISO 9001 accreditation requirements. EDX is committed to becoming carbon neutral through re-using, recycling and improving energy management. What's in the box Set includes: - 1000 x Interlocking Cubes