1,more than 50% recycled material, 2,eco-friendly product. 3,Special painting color available 4,EN71 ... standard 1, 50% recycled material,2, EN71 & ASTM standard3, flexible, not easy broken4, 7" length with eraser5, 3.5" length ... available6, OEM 7, round, triangle or hexangular8, different paint ...