Onyx Stainless Cog: Shimano Compatible 3/32" 17t Model=A.R.S. Standard Saddle 2-button design to adjust speed

2-button design to adjust speed of each flash mode and brightness of Steady mode

Up to 20 hours of runtime and up to 200 lumens

The Rubino Pro has long been a favorite for both training and racing and with the addition of Graphene technology compounds is more versatile than ever

Integrated storage for ball and toy adapters

Onyx Stainless Cog: Shimano Compatible 3/32" 17t Model=A.R.S. Standard Saddle 2-button design to adjust speedOnyx Stainless Cog: Shimano Compatible 3 32" 17t. Onyx stainless steel single speed cogs. Broached splines are made exactly the same for every cog every time Made in the USA TECH SPECS Tooth Count 17 Cassette Body Type Shimano 7 Speed Drivetrain Speeds Single Speed 3 32" Material Stainless Steel Defined Color Silver