The Bosco Bar from Nitto x Rivendell Bicycle Works is an ideal solution for a bike that is too long or too low for its current rider, also a great bar for turning a MTB into a cruiser. These are the heat treated alloy version.
Requires brake levers with 22.2mm clamp diameter. 100mm rise.
Bosco bars have a 25.4mm stem clamp diameter and are 55cm or 58cm wide.