Set #1 -Thee piece set- van, car and truck. Each piece is about 3 1/2 inches long, 2 inches wide. Made of oak. We use 1 inch treaded tires. The peg is securely glued in and the head of the peg is down inside the tire. This is a safety feature. The tires can't be grabbed and twisted until the axle breaks. That is why we use pegs. this way the toy is safer for small children. Safety is always first with Grand Pa John's toys. Shop early for stocking stuffers.