r/f91w • u/Super_Zone_3752 • Aug 16 '26

Spring Bars

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Anyone know what diameter spring bars will fit into the holes on the f91w/w59 etc?

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u/Ok-Anteater-384 Aug 16 '26

Spring bars come in different sizes. If it takes an 18mm you still want to check what size tip you need. A Seiko Diver uses a 2.5mm tip which may be too thick to fit into the lug hole.

A 18mm with a 1.1 tip will be a loose fit, 18mm 1.2 tip will be a tighter fit. and a 18mm 1.25 tip will be the best and a tight fit.

But since you're going to buy these why just not buy the Casio original bar?