The new puncture proof wheels by Optiparts are the ultimate in wheel design. They are a direct replacement for the standars 4.00-8 wheels that are the norm on dinghy trolleys and wheelbarrows

Width of wheel is 75mm
Bore 25mm
Diameter 37cm

They weigh just 1750g, have a wide surface and large diameter for easy use on sand and mud.

Never have a flat tyre again!