Our 1 Hole Slant board set measures 12"x18" and has a 4 inch incline. 4" tubes, it comes with six 2 1/2" inch washers. Standard rules call for the Game boards to be spaced 20 feet apart. It also includes instructions for play. I specialize in Washer Games. Hand made with quality, durability and affordability being most important. I make the real games, made to commonly accepted regulation dimensions, and constructed right!! No shortcuts. Our Washer Games are perfect for family get-togethers, barbecues, picnics, camping trips, tailgate parties at football, baseball and auto racing events. They also make wonderful gifts for all ages and occasions. Increasing or reducing the distance between the boxes controls the level of challenge.Silver zinc and yellow zinc coated washers... nothing to chip or repaint ever!!