A photo of these prototype pedals is shown in the Peloton (velo.outsideonline.com) article: The Pros, The PAVE and Speedplay.  The Zero Pave/Paris-Roubaix Team Issue pedals were used by Fabian Cancellara to win the Paris-Roubaix.

Pedal set weight: 174g

IMPORTANT: RIDER WEIGHT LIMIT: 185lbs (Please do NOT purchase these pedals if you are above this weight limit.)

These pedals were never offered to the public, but only provided to sponsored UCI teams racing in the Paris-Roubaix.  They are compatible with any Speedplay Zero cleat set or wahoo Speedplay Zero cleat set. Included with this purchase is the Zero PAVE cleat set. The Zero PAVE cleat set differs from the standard Zero cleat set in that it includes the stainless steel shims that protect the V.2 base plates.  These are the prototype pedals that became what everyone now knows as the Speedplay Pave pedals.  Unlike the production Pave pedals that use plastic spacers, these Zero Paris-Roubaix pedals use aluminum spacers between the steel inserts ensuring that they are more durable and will have a much, much longer life.  (The ONLY part of these pedals that is not metal are the O-RINGS.)  The internals are identical to the standard Zero pedals with two sealed cartridge bearings and one needle bearing.  As you can probably guess, riders can use these pedals on the road or on the gravel, but the only caveat is that one MUST use the stainless steel shims included with the Zero PAVE cleats.

MAINTENANCE:  When greasing the pedal, the same methodology is used with legacy Speedplay Zero pedals.  One removes the grease port screw, inserts a needle point grease gun and injects grease into the pedal while spinning the pedal body.  Continue injecting grease until it comes out the other side of the body.  However, when one wishes to replace the cartridge bearings, one may wonder how the dust cap is removed.  Unlike the dust caps of the legacy Speedplay Zero pedals, there are no 'ears' on the dust cap nor cavities on the body to allow for a pick to pry up the dust cap to remove it from the pedal body.  This design is rather ingenious and allows for the minimalistic look.  All one needs to do to remove the dust cap is to unscrew the grease port screw partially, then gently grab the grease port screw (that is still connected to the dust cap) and pull the dust cap from the pedal body.  Afterwards, the methodology is the same as on the Zero pedals when removing/replacing the cartridge bearings.  Maintained properly, these pedals will last virtually forever.