4 Inch Glow Sticks 1) Size: 4 inch 2) Glowing time: 6-10hours 3) Color: R, G, B Y, O. 4) CE, ASTM, REACH, EN71 4 Inch Glow Sticks1) Size: 4 inch2) Glowing time: 6-10hours3) Color: R, G, B Y, O.4) CE, ASTM, REACH, EN71Specifications1) Size: 4 inch2) Glowing time: 6-10hours3) Color: Green, blue, red, white, pink, yellow, purple are available ASTM963 and EN71 are approved Non-toxic ,non-flammable ...