50 Standard Empty, Clear Plastic Replacement CD Jewel Boxes (10 mm Thick CD Cases) (Trays Sold Separately) #CDBS10CL These are standard empty jewel cases - just like CDs come in when you buy them in the store (except for without the tray)! They are the standard 10.4mm (a.k.a. .43") thick, our item #CDBS10CL. Trays not included (trays are available separately, or assembled for slightly more. Trays and jewel boxes also available in many colors - see our store) These jewel boxes are 5-9/16" x 4-7/8" and ~0.43" (10.4mm) thick.