Industry Nine Hydra Classic Front Hub 15 x 110mm 6 Bolt Turquoise 28H CheckoutTitle=Wheels Manufacturing Axle #18 }Wolf Tooth Single Speed Stainless }Wolf Tooth Single Speed Stainless Steel Cog: 18T Compatiblewith 3 32" Chains The ratchet and pawl clutch and return spring tension have been finely tuned to offset the smaller cage and lighter chain allowing the derailleur to deliver fast accurate shifts with a light feel 52 degrees yeilding telepathic control From turning and milling bar stock 7075 T6 aluminum for shells axles and encaps wire EDM cutting A2 tool steel for pawls and driverings to in house anodization lab every step of design engineering manufacturing and assembly is done to exacting standards in Asheville NC