The Open Bar is an upright bar but not an uptight bar. With its upright yet relaxed angle its a comfortable option equally suited to explorations on single-track casual cruises and daily commutes. The knurled clamp area enhances grip while the trimmable width and broad compatibility with 25.4mm stems make it a perfect DIY bar for riders who want to revive their vintage mountain bikes. Shim to fit 31.8mm stem clamp included.