The inner tube we have on our 29er is a “Wrench Force. standard.
700x47c-52c. 29x2.1. presta” Wrench force is a rade mark of Trek bicycle
Richard at the bike shop ordered it for us when he ordered the tyre, coz
hes such a nice chap who thinks of things his customers haven’t thought of
World Unicycle Convention and Championships
Unicon 11 . July25th-Aug 2nd Northbend WA USA
pre-registration now open