Knog Blinder Link Light Saddle Mount Black Description-12x165mm Rear Axle Cassette Body Type Shimano/SRAM 11

Cassette Body Type Shimano/SRAM 11 Speed Road Cassette Cogs 11-12-13-14-15-16-17-19-21-24-27-30 Color Gray Defined Color Gray Drivetrain Speeds 12 Range 11-30 Weight 223

And with an internal belt drive design

Spindle can be swapped to fit different bikes and needs

Dent-proof composite shell built around an aluminum frame

}Wheels Manufacturing BBright to Shimano Bottom Bracket with Angular Contact Bearings Black Cups

Knog Blinder Link Light Saddle Mount Black Description-12x165mm Rear Axle Cassette Body Type Shimano/SRAM 11Rack version solves the problem that using racks can often obscure the rider's rear lights, instead mounting on the back of the rack. Includes 2 brackets to fit 50mm and 80mm spacing Saddle version mounts just below the saddle, keeping your seat post clear of clutter and placing your rear light at the best position for maximum visibility. Chip on Board (COB) LEDs provide maximum brightness level for up to 90% of the battery burn time Clip design