Trixie 60923 Holzlaufrad,brown, 28 cm : Amazon.co.uk: Pet Supplies
wheels
Seahelms Wooden Hamster Wheel, Small Pets Exercise Wheel, Mute Running Spinner Wheel for Rest And Exercise of Syrian Hamsters, Gerbils, Rat, Mice, Dwarf, Small Chinchilla (M,Φ/ 21cm) : Amazon.co.uk: Pet Supplies
Trixie Wooden Exercise Wheel | Free P&P on orders £39+ at zooplus!