This Precision Mechanical Solar System model is not only a work of art, but a functioning model of the solar system - an orrery - and all spare parts are available here.

This is Part 4. Contents: 65-Tooth Gear, Planet Mercury, Planet Arm, Self-Tapping Screw, Grub Screws x 4. All packs are sealed, so please check that you have the correct parts before opening them. Please note: this is spare parts only and the magazine is not included.