Skull Hooker Skull Plate Adapter For Use with XXL Bone Bracket Trophy Tree or Table Hooker XXL Bone Bracket Black. The XXL is designed for large and extra large game such as elk caribou and sheep. For use with XXL Bone Bracket Trophy Tree or Table Hooker. (XXL Bone Bracket Skull Plate Adapter-For use with XXL Bone Bracket Trophy Tree or Table Hooker.) Specifications for Skull Hooker XXL Bone Bracket XXL Bone Bracket: Manufacturer: Skull Hooker Color: Black Finish: Black Handle Color: Black Features of Skull Hooker XXL Bone Bracket: For use with XXL Bone Bracket Trophy Tree or Table Hooker Package Contents: Skull Hooker XXL Bone Bracket