The Manfrotto 509PLONG Quick-Release Plate for 509HD Head is an extra-long (5.5") plate for a video camera. It's compatible with the 509HD head as well as other newer Manfrotto video heads.
The plate features 3/8"-16 and 1/4"-20 screws for compatibility with virtually all video cameras, and there's a fixing pin to prevent any twisting. With its built-in index, the 509PLONG plate works with Manfrotto's Advanced Balancing Recorder (ABR) system.
| Material | Aluminum |
| Camera Mounting Screw | 1/4"-20 & 3/8"-16 (2 each) |
| Dimensions (HxWxD) | 0.39 x 1.96 x 5.51" (10.0 x 49.7 x 140.0 mm) |
| Weight | 3.18 oz (90.35 g) |