8 valves needed for a set of 6UL (2 per wheel).

Cap included
Lightweight CNC aluminum alloy valves. These are top nut style to protect the valve from being damaged or unthreaded during mounting of stiff race tires. Less than half the weight of steel valves. Will not rust. Silver anodized. Laser etched 949 logo reputed to be worth 3hp, no really.

Also works for mountain bike tubeless conversions