Fitwell M1 Black Buckle Size:16mm Width 25mm wide (shown side by

25mm wide (shown side by side for comparison)

It effectively doubles the number of fit positions available

Choose the M1 size that matches that measurement

While the M4 is compatible with most

If your strap is straight (non-tapered):Select the M1 size that matches your lug width

Fitwell M1 Black Buckle Size:16mm Width 25mm wide (shown side byAdd precise, half hole micro adjustment to your favorite watch straps. The Fitwell M1 Black buckle replaces your existing pin buckle and doubles the number of usable fit positions giving you a smooth 3mm half hole adjustment. If youve ever found your watch slightly too tight in warm weather or too loose in the cold, the M1 solves it instantly. No tools. No strap modification. Just a precision black finished 316L stainless steel buckle engineered for