So, these are supposed to be 5/16. That is the size listed. That is the size crayola lists on their sites. That is what I can find everywhere. I bought an extremely low temp hot melt glue gun for a weird project with these in mind, and because off brands are more dimensionally accurate, BUT HARDER TO FIND IN ALL WHITE, I ended up modifying the glue gun.I'll keep buying them now, because they work in my modified glue gun, but I wish Crayola would have made them ACTUALLY 5/16 in size.
Rating: [4 of 5 Stars!]