Portland Design Works Alexander Graham Bell - Black Model=DUB Non-Threaded Bottom Bracket Center “scales” are ramped providing

Center “scales” are ramped providing a fast rolling leading edge yet sharp effective braking and cornering edges

Extendable hose helps take stress off the valve stem

Urethane coated hooks wont scratch paint

This performance boost is achieved through the SmartEVO2 compound Pirelli’s most advanced compound which delivers exceptional grip and performance

Integrated waterproof rain cover

Portland Design Works Alexander Graham Bell - Black Model=DUB Non-Threaded Bottom Bracket Center “scales” are ramped providingBuilt to replace a 10mm 1 1 8" headset spacer the Alexander Graham is a classy addition to your bicycle without sacrificing handlebar space. There's nothing like the strong clear sound of a solid brass bell to announce your presence to all. Mounts under the stem replacing one 10mm 1 18 headset spacer Mount Location Headset Color Black