Wheel clamping butterflies appeared at the beginning of the 20th century to make it easier to remove wheels quickly. Popularised by Tullio Campagnolo in 1930, they replaced conventional nuts and allowed quick changes, particularly in racing. Their lever mechanism ensured efficient tightening without the need for tools.
2 butterfly nuts
for vintage bicycle front wheel.
diameter: 8 mm
material: aluminium
old stock from the 60s
made in France
condition : new, old stock.
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