The Racker Snooker Ball Marker has been designed and manufactured to our high tolerances of just ± 0.2mm. This means the width of the ball marker is as close as to the object balls as possible if its required to see if the cue ball will pass through a gap. Another addition we have added is the “Heads” Or “Tales” wording on the product. This is to help prevent players using a coin which can cut into the cloth. This is not intended to be thrown but instead pulled out of a pocket in a close fist while the other players picks “Heads” Or “Tales”.