"Pinchback OriginalCap System" - Uses your original skull cap! Cutting your antlers off the skull cap and reattaching individually can lead to misaligned angles and different spacing than it was naturally. This item can be used to transform a skull capped set of antlers, an old skull or antler mount, or even a damaged shoulder mount to a pristine European skull mount! This an Alaskan-Yukon moose known to be larger than Shiras moose. To mount: Trim & modify the skull cap to fit nicely into the provided slot. Using 4 screws, attach the skull cap to the skull through the embedded wooden block. Next use apoxie sculpt, bondo, or similar product to blend & smooth out transition. Finally, paint using matte/flat white (add clear to seal if desired). Measurement: Pedicle size on your original skull cap correlates with the correct size: Skull Cap Pedicle Size - Total length - 24” Total width - 9 1/2” Instructions for professional installation are included along with 24/7 customer service to provide any additional help needed.