Folding Key Organizer Dimensions: 3-7/8 in. X 1 in. X 7/8 in. Weight (with no keys): 1.5 oz Barrell Outside Diameter: 3/16 in. Made in USA; Holds standard door keys and most car keys; Fits comfortably in pocket Includes washers (add or subtract as needed), two different size holding barrells (small-6 keys and large-12 keys), adjustable tube for large keys, and key ring attachment No fingerprints, Made from anodized aluminum (1/8 in. thick) Keys rotate 360 degrees with comfortable resistance, Large keys rotate 180 degrees