The SPPL4 adapter is dedicated SpeedPlay and the new Wahoo pedals. You get 10-20mm extra displacement compared to the standard cleats.

Compatible with SpeedPlay Zero, Comp, Walkable, Aero, X and Wahoo Comp, Nano & Zero pedals.
Eliminates the Speedplay 3-to-4-bolt adapters.
44g (Minus 38g for the SpeedPlay 3-to-4-bolt adapter. Only adds 6g to your bike.)
Two years warranty
In the package:

COMPATIBILITY WARRANTY: If the adapter does not fit your shoe, send us a photo of your shoes with the adapters mounted and tell us your shoe size and model. We will then provide a full refund.