Uncle's notes A ratcheting diver clasp is an excellent feature for dive watches due to its functionality and versatility. This clasp allows users to make micro-adjustments to the bracelet length without requiring tools, which is particularly useful when wearing a wetsuit. While I doubt many of my nephews are wearing this in the ocean, it's a great feature for everyday wear, too! Please note: these clasps are much longer than the typical diver clasp, and are intended for large wrists. Please read the specs carefully before purchasing - should fit wrists above 7" if used with the MarineMaster bracelets. This clasp will work on any bracelet where each side is an 18mm straight end connected by a spring bar. Specs Width: 18mm (21mm outer width) Length (closed): 50mm Length (opened): 62mm Weight: 34 grams Material: 316L stainless steel Finish: Brushed