Industry Nine iRiX Upper EC34/28.6 Purple 5mm Cover Length-120 this light is engineered for

this light is engineered for maximum efficiency and runtime

Recessed nipple beds in the double wall section of rims

Width: 52 mm

Diameter: 12mm

air dry Color Black Print (other colors available) Specs per Hestra

Industry Nine iRiX Upper EC34/28.6 Purple 5mm Cover Length-120 this light is engineered forCustomize and upgrade your cockpit with iRiX options Separate upper and lower headset cup assemblies to mix and match Upper assemblies include star nut and top cover, while lower assemblies include split crown race Crown race and top cover employ removable and replaceable silicone lip seals to keep the sealed, 440c stainless steel bearings contaminant free TECH SPECS model iRiX upper S. H. I. S. EC34 28. 6 upper lower upper stack 11mm color purple