Construct a letter with every tap! Kids just grab an activity card and use the builders to form the letter on the burlap-covered foam board…then connect the builders with the nails, reinforcing letter formation as they go! Center includes 26 cards, 40 builders, 36 plastic nails, a durable foam hammering board with a reusable cover and a kid-safe plastic hammer. Board measures 12"l x 12"w x 3 1/4"h.