JTZ Dp3000 M2 Mattebox + Sunshade + Filter Trays for 15mm Rod Dslr 2 dual-purpose filter trays,supportinh 4"x4" filter.One of the 2 filter trays is rotatable,which will be helpful when you use gradual ND filter The side flags are quick removable. They can be attached /detached easily Material:Made of metal and plastic Compatible with 15mm rod ,center-to-center rails distance 60mm. Height can be adjusted by 4cm