21in. Heavy Duty Inner Tube with Metal Centre Valve. Fits 2.15in. Wide 21in. Rims

* These HEAVY DUTY Tubes feature a full 2 mm thickness compared to a standard tube 1.2 mm thickness

* More durable with better puncture resistance

* Butyl/Rubber construction

Fitment Details:-

* Fitment to Tyre Sizes: MH90-21" / 80/90-21" / 90/90-21"

Features & Benefits.

* TR4/TR-4 Metal Centre Valve