aluminum 7075 CNC +ABS Plastic
only for bike with 1x drive systems, for one-piece sprockets.
Material: aluminum 7075 CNC +ABS .Weight: 52g.Features: Durable, Lightweight, Anti-rust.Fashion and simple design,and with nice appearance. Easy to install, do not worry about drop a chain again and double your chain ring life
for bicycle tube diameter 31.8 mm to 35 mm washer.We free give the spacer in the accessories,if you feel moves, please add spacers according to the second picture or video.
Common sense: you occasionally need to check whether the screws are firm, this is for your safety
Note: only suitable for ordinary bicycles（bike) , mountain bikes, off-road bikes, NOT suitable for bicycles with lithium batteries.

Shipping is complimentary within the lower 48 US States.

We Do Not Ship to PO/APO Boxes, HI or Alaska
We Do Not Ship Outside of the Continental US
All items ship within 24-72 hours of Payment
For large items that require Freight shipping a valid phone number is required to call and schedule your delivery

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