These Ultra bright glowsticks are INSANE! They are definately worth the extra price if used at that right moment for a killer lightshow. These 6” sticks are Glowlight brand High Intensity Glowsticks. All colors are 5 Minute High Intensity Glow Sticks. They will fill a room with light, but will not last too much longer then 5 minutes. For quantity discount pricing please contact us at firstname.lastname@example.org.