1.88" overall. Specifically designed for a belt to allow quicker access to frequently used tools. You can use the clip to attach your KeyBar, a set of MagNuts or anything you do not want inside your KeyBar. Items you can attach to the belt clip include key fobs and industrial keys. The hole at the bottom of the clip is designed for chain rings. The top hole can be used for hanging a paracord for quick access. Bulk packed.