NOS Suntour SL-4050-BS / Edge 6-Speed Shift Levers

Description

NOS Suntour SL-4050-BS / Edge 6-Speed Shift Levers
New in Sealed Package
Shifter Type: Downtube
Attachment Style: Braze-on
Index / Friction
Lever Material: Aluminum
Derailleur Cables, Housing, and Cable Ends Also Included
The following was taken from Velobase:
The shifters will bolt onto down tube braze-on bosses without a problem and please note the adapters/spacers included with these shifters are sort of a hybrid design. They have a partial half-moon shape to them, so they will mount to a vintage steel down tube, which typically measure 28.6 mm in diameter. However, because these adapters/spacers also have a fairly significant flat profile that flanks each side of the curved (half-moon) profile, they will also mount onto an oversized (aluminum or equivalent) down tube, which typically has down tube shifter bosses with half-moon spacers/adapters already attached (as part of the bosses). The end result is these larger diameter composite frames will have down tube shifter bosses with a flattened profile at their mounting point (with the shifters). As a result, these hybrid-type shifter adapters/spacers are really capable of mounting on just about any type of down tube shifter boss, which is a very nice feature given that shifter adapaters/spacers can sometimes be a difficult find.