I think it is any wat the best i can tell .The pockets are big 4.75 to 5.00.Im looking for a 4.5 inch pocket size .Can i get replacement rails (not the rubber ) The wood that is longer so i dont have to use the rubber shims ? I think they play funny that way ?Or can i do a lil wood work on the ends of the rails and get the right angle and size i want useing only 1 shim ?Im going to replace the rubber any way if i buy this table any idea what rails would cast if i bought longer ones ? thanks Bill