Ywsports 6pcs Plastic Teachers Self-inking Stamper Cartoon Stamps Set Kids Toys Material: Plastic Size Approx: 2.7x2.7x2.4cm (Each self inking stamp) Conversion: 1inch=2.54cm, 1cm=0.393inches package include: 6pcs For work after doing well, 6 assorted statements each to a different color: red - well done, orange - super, coffee - great, green - nice work, blue - very good and purple - terrific.