Drawers are available in three sizes:

    2 inch (M48*0.75) drawer * 2 pieces
    1.25 inch (M28*0.6) drawer * 2 pieces
    36mm frameless drawer * 2 pieces (with two inches)

product description:

    Main mirror end interface: M48*0.75
    Output: M42*0.75, thickness 4MM
    Thickness (extended length): 16mm
    Weight: about 100g
    Filter insert: 2 pieces, add and purchase separately.