This parts are designed for model boats for the scale of 1:16. After printing and removing the support, I sanded and sprayed it with plastic filler. To assembly the steering wheel (22 mm diameter) with the driver´s station you have to press a 10 mm long brass pipe into the driver´s station and a 15 mm long brass rod with 2 mm diameter into the steering wheel. The throttle controls is built with brass rods of 1 mm and 2,5 mm diameter At the end I painted the parts with Email colors from Revell.