Q1. The motorcycle U-Bolt Mount mount clamp holds the following diameters

1. When the U-bolt is combined with the large pads, it can clamp diameters ranging from 13mm to 21mm.
   
2. When the U-bolt is combined with the small pads, it can clamp diameters ranging from 22mm to 31mm.
   
   

Q2. What are the recommended usage scenarios and speed?

It is only recommended for riding on flat road surfaces, and the speed should not exceed 80km/h.
Off-road riding is not supported.