1. 50% recycled material, 2. eco-friendly product. 3 EN71 & ASTM standard 4 Flexible, not easy broken 1,50% recycled material, eco-friendly product.2, EN71 & ASTM standard3. Flexible, not easy broken4, 7" length with eraser5, 3.5" length available6, OEM7, round, triangle or hexangular8, different paint color or eraser color