TOM rear wheel Rear wheel with Zac 2000 rim and Shimano Nexus 8 hub for disc brake suitable for electric shifting (Di2). This wheel is delivered without accessories such as nuts and shifters. General specifications: Type of bicycle: city bike, electric bike Inch size: 28 inch ETRTO size: 622 Position: rear Brake system: disc brake (SM-RTC60) Rim specifications: Type: Ryde Zac 2000 Rim color: silver Rim flange color: silver Material: aluminum Outer width: 24.6 mm Inner width: 19 mm Height: 21.5 mm Valve hole: 6.5 mm Hub specifications: Color: black Material: steel Type of bicycle: city bike / electric bike Number of gears: 8V Brake system: disc brake (SM-RTC60) Axle length: 187 mm Installation width: 135 mm Flange width: 3.2 mm Type: SG-C6060-8D Spoke specifications: Number: 32 Material: Stainless steel