Description:Sliding Quick release plate for the Manfrotto 504 type heads. Has a numerated scale on one side for repeatable, quick set up. Includes 1/4 and 3/8 screw.The newest Manfrotto plate for video cameras. This plate is replacement for the original 504PLONGR plate. Both are visually the same and measure 5.5 inches (140mm) long to accommodate bigger cameras. Fits Manfrotto Fluid Heads: MVH502AH, MVH502A, 504HD, 509HD, MVHN8AHUS, MVHN1AHUS