Our casino grade discounted On Off Dice Puck - Engraved 3 Inch are 3/4 inches thick. The puck is white on one side with black engraved letters saying on and black on the other side with white engraved letters saying off. Made from a thick hard acrylic with two black O-ring style rubber bumpers. The on side of the puck is put on the point that has initially been rolled and the off side of the puck is used to show no point has yet been established.