Unquestionably one of the finest producers of quality components for the discerning cyclist, Extralite is the go-to company for gram conscious builds. Responsible for some of the absolute lightest hubs available, Extralite is a company constantly pushing the envelope for what may be possible. Road / Cyclocross lightest disc hub. Improvements over the previous model: - No need to open the hub for wheel building or spoke replacement - More equalized spoke camber on each side - Can handle a higher spoke tension Weight: 146gDrilling: 24h onlySpoke number: 24h onlyMaterial: special AL7075TX & Grade5 TitaniumBearings: 3x 6803-2RS ABEC5 1x6903-2RS ABEC5 cartridgesWidth: 135mm(quick release) and 142mm(Thru axle 12mm) framesCompatibility: Shimano-Sram 8/9/10/11S*, Campagnolo 9/10/11/12s, Sram XD/XDR Drive*Bearing options: ABI Enduro 440-stainlessAxle construction: multishaped 17mm, milled to micro tolerancesBody construction: 3D multiaxial machining all in 1 stageFinishing: black anodized body, "hart-coated" axle-endsMicro-tuner: the quickest bearing preload systemFreewheel: Hyper engineered 2pawls OR-DriveGraphics: laser etched