Joined: Jun 2012
Posts: 1,881
Likes: 188
From: Colorado
Bikes: '91 Mtn Tek Vertical, '74 Raleigh Sports, '72 Raleigh Twenty, '84 Univega Gran Turismo, '09 Surly Karate Monkey, '92 Burley Rock-n-Roll, '86 Miyata 310, '76 Raleigh Shopper
Just guessing at the situation, but one of those will have a 26.4mm inside dia., and the other one will be 27.0mm.