Chrosziel C-410-46 110-100mm Step Down Insert Ring

The Chrosziel AC-410-46 Step-Down Insert Ring is a 110mm to 100mm step-down ring. When the outside diameter of a professional camera lens is 100mm, the user needs a step-down ring to adapt the Chrosziel 4x4" 110mm sunshade's opening. The ring rests inside the mattebox and quickly flips to accommodate the smaller lens.