GB Girder section
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Category:  Stems
Name:  GB Girder section
Brand:  GB
Model:  Girder
Years:  Late 1940's - Mid 1960's
Country:  England
Added By: daveross on 01/31/08
Updated By: abuhugh on 09/16/18
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GB Girder sectionGB Girder sectionGB Girder sectionGB Girder sectionGB Girder sectionGB Girder sectionGB Girder section
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MaterialAluminumMarkingsGB logos, SOLID FORGED and BRITISH MADE
Bar Clamp Size 25.4Quill Size 22.2
Expander Style ConicalExpander Bolt Size
Binder Bolt Size   
General Information
GB made these stems starting in the mid/late 1940s. This longer version only appears in the 1947 leaflet and the shorter 1¾" version survives only into the 1966 GB catalogue. They do not appear in any later extant catalogues and do not seem to have been made in any other lengths.  A similar design was offered by GB much later in the 1970s - the 'Nova' stem, in metric lengths - with a different T-shaped rather than I-shaped girder profile. Sturmey Archer made (or labeled) a similar stem.
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