their quest to develop some of the toughest cranks on the market paid off after machine testing and riding testing proved them to be insanely strong

and spec is based on the most prevalent British ISO standard- 1

The Avian Versus Fork Dropout Adapters are used for reducing a 20mm fork dropout to accommodate a 10mm axle

REAR HUB: 14mm Semi Sealed Cassette

sealed bearings and female chromoly axle

Profile Chromoly Female Hub Bolts Size:Button Head 10mm to 14mm their quest to develop someChromoly female hub bolts from Profile available in the following options: Option A: Profile Button Head Bolts. Profile chromoly button head bolts available in 3 8" (10mm) or 3 8 (10mm) to 14mm with adapter for 14mm drop outs for Profile front rear hubs. Option B: Profile Volcano Bolts. 3 8" (10mm) x 16 tpi volcano bolts to fit Profile and Madera female axles, heat treated cromo bolt with aluminium volcano washer, accepts 5 16" or 8mm hex wrench.