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Old 06-11-21, 03:08 PM
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Location: Torrance, CA
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Maybe I'm wrong but I thought Gilco tubing was proprietary to Colnago?

Regarding the tube size, you might want to take some calipers to the OD and measure in the area just above the bottom bracket and below the seat lug. It's likely to be 1-1/8" diameter but it wouldn't hurt to confirm.
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