Portland Design Works Alexander Graham Bell track / single speed Genius levers are designed to

Genius levers are designed to work with linear-pull brakes and are excellent for BMX mountain city urban and tandem flat-bar bicycles

They cover a temperature range from -15 ° to + 6 °

compression nut

6 Stack Height 36 Weight 172 Color Black Material Aluminum Length 90 Bar Clamp Diameter (mm) 31

5" Base Mount Gauge 160 Psi /11 Bar Smarthead Black/Blue

Portland Design Works Alexander Graham Bell track / single speed Genius levers are designed toBuilt 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 Brass