Manfrotto 553 Angle Bracket for Level Center ColumnManfrotto 553 Angle Bracket for Level Center Column Working with the center column in the horizontal position on many Manfrotto tripod models has always caused a slight difficulty, in that the head remains at 90 to the ground making it more difficult to position the camera correctly for shooting. Now this simple right angle adapter works well with horizontal columns by putting the head in a traditional position for easier shooting.