Altair Track 10Mm or 14mm Drop Out Chain Tensioner Pair

so in the rear end of the bike frame we have dropouts and they connect these tubes to the hub of the of the wheel on the back of your bike and there's different styles that are have pros and cons fabrication wise and in terms of what they work with so I'm gonna give a basic overview of all the different styles and why you might choose one over another so here I have a collection of different dropouts stuff that I ended up with over the years some of it I bought some of it just showed up but anyway there's different styles here so we have sliding dropouts with a hood or a flange they call these flange dropouts go to dropouts and they're sliders because you can loosen these screws and you can change your rear wheel base here your chainstay lengths these ones here more of an old-school forged tab style dropout for for quick release with a derailleur hanger and some some fender eyelets you'