See attached photo for reference. I measured the following lengths from hole to tip: H: 9.0 mm M: 13.5 mm S: 14.0 mm
These work nicely, I've used a couple sets, they measure and fit perfectly. https://www.ebay.com/itm/Silver-Color-Watch-Hands-to-Fit-Omega-Movements-550-751/300730874887Purchases made through these links may earn this site a commission from the eBay Partner Network