Manfrotto Video Camera Plate with built-in index for 509HD ABR system Product Description 509PLONG the new extra long camera plate suitable for all the latest Manfrotto Video Heads. This plate works together with the new ABR (Advanced Balancing Recorder) system thanks to a special built-in index. Features
Made in aluminum
1/4" camera screw and 1/4” to 3/8" adapter included