Alter Cycles, Taiwanese brand. Every parts all washed by complete aluminium board which takes lots of time and cost. Taiwan is the most popular bicycle manufacturer country. Alter Cycles insist to build exquisite high quality bicycle component.
 
Delicated CNC finish design, perfectly combined with vinyl record look. Create special style on your bike.
 
Keep using same procedure with 5mm marine class 7075 aluminium board with CNC finish. Delicated angle, calculated strength and teeth length makes driving force performance better than others.
The detail and hardness also cannot doubt. 
 
Great chainring recommend to you!
 
 
Color: Black
Teeth: 49T/ 51T
Spec: BCD 144
Weight: 154g(49T)/ 185g(51T)
 
 
 
Made In Taiwan.