1. Can install on about Φ31.8/25.4/22.2mm(used giveaway spacers) handlebar.
Fit for 3.5--6.2 inch phone electronic equipment used, compatible bike/E-bike/scooter/motorcycle etc.
2. Using nylon material is strong than ordinary plastic material, more toughness and strength, 
four claw design firmly lock the phone, riders have tested, up and dowm the stairs, 
ride on the hillside road, the phone won't fall, real off-road level.