Dia-Compe Gold Finger 318 OS lever
Just like the regular version but with a 31.8mm clamp to fit next to the stem on oversize bars.
Available in all black or polished silver (oddly enough, the OS version does not come in gold).
• cold forged aluminum w/ hinged clamp
• clamp: 31.8mm
• left or right (sold individually)
• color: black, silver