The D3 PTP is an aluminium rear toe plate used to protect the ski from heel dents that are usually not covered by the ski manufacturers warranty. The D3 version can be screwed or bonded to the ski using 3M VHB tape. For a Carbon / composite version, check out the Reflex Plate.
NOTE: This is only compatible with the 2016 onwards Aira trick skis. Adapter plates are in stock to convert your previous generation plate to the PTP plate.