Topeak Modula Cage II - Silver SW Only The head of the PS-1

The head of the PS-1 mimics a section of disc brake rotor

Shimano SPD 24g

The disc-specific hubs feature super strong QRM bearings that provide low friction and long-term durability

To be used on road only

and then UST Tubeless

Topeak Modula Cage II - Silver SW Only The head of the PS-1Innovative diameter adjustment system makes adapting the Modula Cage from traditional cycling water bottle sizes to store bought bottled water containers quick and simple just push a button and slide to fit. Constructed of engineering grade plastic and aluminum. MATERIAL Aluminum Engineering grade polymer OUTER DIAMETER Fits 63 74 mm 2. 5 2. 9 SIZE 15. 8 x 8. 6 x 7. 6 cm 6. 2 x 3. 4 x 3 WEIGHT 72 g 2. 53 oz