{"product_id":"spring-bars-rolex-datejust-31-16mm","title":"Spring bars Rolex Datejust 31 — 16mm, 1.5mm diameter","description":"\u003cp\u003eSet of two spring bars for modern Datejust 31, in hardened Swiss Standard steel. Size: 16mm between the lugs. Pin diameter: 1.5mm. Covers the current generation 278240, 278271, 278274 (and the versions with gem-set bezel 278384RBR, 278383RBR) and the previous 178240, 178271, 178274.\u003c\/p\u003e\u003cp\u003eThis measurement is not from any catalogue: I took it myself, with a caliper, on a 278 that passed through the atelier. Sixteen millimetres exactly between the lugs, closed lug hole. It is the middle size no one expects — not the 13 of the vintage Lady, not the 17 of the vintage gold 31s — and those who order by eye usually get it wrong right here.\u003c\/p\u003e\u003cp\u003eClosed lug hole, 1.5mm compression pin. A new spring bar with every strap change: on a 31 case, any play is felt immediately.\u003c\/p\u003e","brand":"Milano Straps","offers":[{"title":"Default","offer_id":46133277982754,"sku":"MS-RXSB-DJ31-ST-1516","price":12.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6461\/9298\/files\/rolex-spring-bars-close-up-day-date-milano-straps.png?v=1779628690","url":"https:\/\/milanostraps.it\/en\/products\/spring-bars-rolex-datejust-31-16mm","provider":"Milano Straps","version":"1.0","type":"link"}