1.Hollow craft

   ZTTO bicycle cassette use high-strength steel material with refined hollowing craft, the same performance while effectively reduce cassette weight.

2.Favorable Gear Ratio design

   We use 11-12-13-14-15-16-17-19-21-23-25-28T , 11-12-13-14-15-17-19-21-23-25-28-32T, 11-12-13-14-15-17-19-21-23-26-30-34 T,Gear Ratio, with a smoother gear ratio, it will be easier for rear derailleurs to shift.

3.High quality plating craft

   Full cassette use high quality plating craft, shine sliver color let your bicycle more beautiful.

4.Excellent workmanship

    High-strength steel material with workmanship excellent, provide high wear resistance and long service life.

5.Full CNC machined 7075 aluminum lockring

   Not only beautiful anodized color, these lockrings could be extra lightweight and strong.