Watch owners frequently purchase the incorrect size clasp. Before you place your order, make sure that you have selected the proper size deployant for your watch band.

Often, the correct clasp may have a different measurement than the strap. For example, a 20mm watch band might require an 18mm clasp.

If Buying a Clasp for an Existing Watch Band:
If you are purchasing a clasp for a band that you already own, be sure to measure the width of the strap at the buckle end, as shown, below.

If Buying a Clasp for a New Watch Band: If you are purchasing a clasp to fit a new band that you are ordering, check the Buckle Size on the Details tab of the watchband item page. This will tell you what size clasp is needed.