Specification diameter100mm*height50mm diameter of sphere 60mm*height20mm Material Tempered Optical Glass of Highly Crystal Silicon Origin Shandong Province?W CHINA Color White Green Blue Amber Yellow Red Retro Reflective Material Silvering Material Protective Material Metallic Compound Retro Reflective Angle 360o Product N.W. 500 Carton Measurement 320mm*230mm*230mm National Standard Turnover Attrition Rate 3% Packaging G.W. 13kg N.W. 12kg Packaging Quantity 24 units Hardness 170 Weathering Resistance Properties≥ 16280h Anti-Collision Resistance:≥20 ton