Spindle Size: These cranks use a 30mm spindle

seamless 2014 Aluminum

and a there is a seamless construction on the seat area for greater comfort

Plastic Clip-open carrier

Osprey Hydraulics Bite Valve PLP|EMTB Optimised Spindle Size: These cranks useReplacement Blaster Bite Valve to suit Osprey and Hydrapak reservoirs. These are high quality units that feature Hydrapak's bombproof twist shut off design. Who's this for: Anyone with a Hydrapak reservoir of any brand that needs a new bite valve to replace a lost or damaged one. What will it fit: Lots of brands use Hydrapak reservoirs in their packs so if you have one it'll fit, even if it's not from an Osprey branded hydration pack.