Ring can be fixed into the synchronous wheel to save the bridge fixed distance，Only suitable for round bridge, carefully purchased
Fit 7-inch skateboard bridge 8352,9052,9752 skate wheel 6 holes of the wheel ，Fit 50,series brushless motor electric skateboard bracket,
adapter motor screw fixing hole pitch: Φ 30.0 * 30.0
Adjustable belt, fit belt circumference 250-275
Transmission is accurate, no slip at work, with a constant transmission ratio.
Smooth transmission, with a buffer, shock absorption capacity, low noise.
Easy maintenance, no lubrication, low maintenance costs.
Bracket structure design fixed hole position can be adjusted motor 4 fixed screw position,
thereby adjusting the size of the belt between the synchronous wheel elastic.