Cateye Sync Core Front and Kinetic Rear Light Set - Charcoal - Red YGroup_7033623347245 T30 Torx keys and a

T30 Torx keys and a combo cross/straight tip screwdriver

In the box:

BR-M820 - Saint

Then choose the adaptor that will provide you with the amount of increase you need

Actually Fits: 26" 17-19mm Internal Diameter

Cateye Sync Core Front and Kinetic Rear Light Set - Charcoal - Red YGroup_7033623347245 T30 Torx keys and aIf you are after a light set that will keep you safe on your commute to the trails, and you also like playing with funky apps, then the Cateye Sync Core Front and Kinetic Rear light set is perfect for you. With a front light that produces up to 500 lumens and a rear light producing up to 50 lumens, you will be seen from any angle on your way to the trail head. The lights can be connected to Cateye's CatEyeSYNC app to give you real time battery life