Hi, You are looking at a Set of 4 Good Care (4.00-5) 300x100  400x5 Black Block tread mobility scooter tyres. These are high quality 4 Ply tyres very strong, with deep tread, especially for the back wheels. They can be inflated to 50 psi (3.5 bar).
Width: 10cm
Diameter: 30cm
Tread Depth: 5.5mm
Weight each tyre: 1.5 Kg

Thanks for looking!!