Turn your Manfrotto Head into a Peak Design and Arca Compatible System - {DPHacks}
クイックリリースクランプ Manfrotto/アルカスイス互換 MAC-14
Amazon.co.jp: PM501 Manfrotto Type Quick Release Plate Arca-Swiss Type Clamp Internal for 501PL / RC3 / RC5 / NG Head with ProMediaGear Strap Port for Video Head and Plate : Electronics