Description The Sturmey Archer 1 Speed Coaster Hub S1C will upgrade any single speed bike. Single coaster brake designed for heavy duty use 6061 Aluminium hub shell 36 spoke holes Supplied with an 18T sprocket (Compatible with 13 to 24 teeth sprockets) Chromoly axle High-polish anodised alloy finish Weight – 1265g Sturmey Archer 1 Speed Coaster Hub S1C Specs SPEED – 1 Speed TYPE – Coaster Brake HUB SHELL MATERIAL – 6061 Aluminium AXLE DIAMETER – M10 AXLE LENGTH – 156mm OVER LOCKNUT DIMENSION – 119mm R. AXLE PROTRUSION LENGTH – 18mm L. AXLE PROTRUSION LENGTH – 19mm SPOKE HOLES – 36H PITCH CIRCLE DIAMETER – 67.0mm FLANGE WIDTH – 56.6mm CENTER TO FLANGE RIGHT – 24.5mm CENTER TO FLANGE LEFT – 32.1mm SPOKE COMPATIBILITY – 13G & 14G SPROCKET TEETH – 13-24T (Supplied with an 18T) CHAIN LINE: 1/8″ FLAT – 42.2mm CHAIN LINE: 1/8″ DISHED – 40.5mm / 43.9mm CHAIN LINE 3/32″ FLAT – 41.7mm / 42.7mm CHAIN LINE 3/32″ DISHED – 40.0m / 44.4mm FINISH – Hi-Polish Anodized WEIGHT – 1,265g Need a wheel built? Want to build a wheel with this hub? We build wheels with Sturmey Archer hubs in our workshop in Richmond, give us a call for a quote on our IGH wheel building!