The Arise Echo Front Hub is a super lightweight race-spec front hub with oversized bearings for stiffness and reduced rolling resistance. Designed to match the style and shape of the Arise Echo Cassette Hub.Material: 6061-T6 alloy refined hub shellAxle: fits 20mm thru-axle or 10mm female axle (not included found here)Size: 100mm OLDSpoke Holes: 36hMeasurements: PCD: 47mm, flange offset 34.25mmColours: Black or Oil SlickWeight:175g (6.0oz) - w/o axleBearings: 2x 6804-2RS bearings (20 x 32 x 7 mm)Features:• super lightweight race-spec front hub• larger oversized bearings for reduced friction and low rolling resistance• compatible with 20mm thru-axle or 10mm female axle (not included)• DOES NOT include axle. Purchase separately