18" Heavy Duty Tube with Rim Tape

3.50/4.00 x 18 Butyl Inner Tube

New Heavy Duty Inner Tube with Free Rim Tape

For Tyre Sizes 325 x 18 / 3.50 x 18 & 4.00 x 18

This size of tube is better in a 4.00 x 18 tyre as it is smaller, less chance of nipping it with a tyre lever! 

Heavy Duty so stands up to the rigours of off road use.

Manufactured from Butyl rubber which is a synthetic rubber, impermeable to air and very flexible