Have: Four (4) Forte 700x28-32 road tubes. 48mm presta valve stems.. 139g each.
Want: Four (4) 700x18-25 (tube that'll work with 23-25mm tire). 36-48mm presta valve stems. Doesn't have to be ultralight. In fact, I'd prefer they weren't for durability's sake, but I'm not picky.
PM me. Let's make a deal!