Water Ski Bindings D3 T-factor Rear M (for rear foot)

For water skiing (not wakeboarding). Purchased in 2024, used for 1 day. Did not suit me, so I purchased a slipper-type binding and switched to that, making this one unnecessary. It's almost new, but there are screw marks from installation. Please check the photos. For those who need it.
T-Factor Rear (for back foot)
M size