Wolf Tooth B-RAD Mounting Bases Material:Aluminum You will use the stock

You will use the stock bolts to mount this chainring

which helps socks feel better on and last season to season

They are sold separately and in this group of three

38T use 6mm bolts

Weight: 2100g/pair

Wolf Tooth B-RAD Mounting Bases Material:Aluminum You will use the stockB RAD Bases are the foundation for the B RAD system, as the rest of the system accessories mount to them. These allow you to move bottles to make room for frame bags, move bottles away from suspension shocks, create space to mount additional bottles and or bags to the same bottle mount. Repositioning uses existing bottle mounts on frame Lightweight, durable, rust proof materials Customize storage to your specific needs with flexible B RAD system B RAD