Rolly Toys John Deere Trailer, 2in1 Sandbox Seeder with Chain Gear for Farmer The trailer is equipped with a chain gearbox that, when connected to the wheels, turns into a seeder for the farmer or sandblaster when a slippery surface needs to be sprinkled with sand. The product is equipped with a lever that switches off spreading. The trailer has a removable cover and fits all Rolly Toys vehicles