Shimano Nexus DHUR705D12AS 36 Hole Center-Lock Bike Wheels - Silver - Unisex Bicycle Wheelset for Urban Commuting & City Riding

Highly efficient, super light weight, premium grade 6 volt 3 watt dynamo front hub for easy to use and ridged 12 mm axle fitmentProvides bright illumination for safer night riding without the need and expense of replacing batteriesImportant weight savings are made by using an efficient and light weight aluminium coil structureFor use with rim brakesLabyrinth and contact sealing as used on the premium groupsets - low-friction seals and internal grease sleeve effectively shut out water, mud, and dirt without affecting rotational smoothness increasing service lifeBorozon treated cup and cone bearing races - super mirror finish bearing races reduce friction providing smooth and precise bearing rotationPush-in wiring harnesses make installation fast and easyDouble anodized, premium finish forged aluminium hub shell12 mm x 100 mm O.L.D. SM-AX720 axle sold separatelyAverage weight 550 grams