Rolex GMT-Master II Strap Guide (126710BLRO, 126710BLNR, 126710GRNR, 126720VTNR): 20 mm Lugs
Short answer: the current Rolex GMT-Master II references (126710BLRO "Pepsi", 126710BLNR "Batman", 126710GRNR "Bruce Wayne", 126720VTNR "Sprite" and the two-tone 126711CHNR / 126713GRNR) all have a 40 mm case and a 20 mm lug width. The previous ceramic generation (116710LN, 116710BLNR) and the five-digit 16710 also use 20 mm. Any curved-end 20 mm strap shaped for the GMT-Master II case will fit across the whole modern range.
GMT-Master II references at a glance
| Reference | Bezel | Case | Lug width | Notes |
|---|---|---|---|---|
| 126710BLRO | Red / blue Cerachrom ("Pepsi") | 40 mm | 20 mm | Oystersteel, Jubilee or Oyster |
| 126710BLNR | Blue / black Cerachrom ("Batman") | 40 mm | 20 mm | Oystersteel |
| 126710GRNR | Grey / black Cerachrom ("Bruce Wayne") | 40 mm | 20 mm | Oystersteel, 48 mm lug-to-lug |
| 126720VTNR | Green / black Cerachrom ("Sprite") | 40 mm | 20 mm | Left-hand crown |
| 116710LN / 116710BLNR | Black or blue / black Cerachrom | 40 mm | 20 mm | 2007–2019 generation |
The 40 mm case and 20 mm lug width are listed in the specification sheets published by dealers such as Bob's Watches and in the watchsize.io entry for the 126710GRNR (40 mm, 11.9 mm thick, 48 mm lug-to-lug, 20 mm lugs). If you own an older GMT-Master (1675, 16750, 16700) the lug width is also 20 mm, but the case profile is thinner, so a strap cut for the ceramic case may show a small gap. The lug width guide explains how to check.
What to look for in a GMT-Master II strap
- 20 mm curved ends. The GMT case is identical in profile to the Submariner 40 mm, so straps shaped for the 116610 Submariner generation also sit flush on a 116710 / 126710 GMT.
- Colour that works with the bezel. Black is neutral under every bezel; navy picks up the Batman and Pepsi blue; green matches the Sprite; grey suits the Bruce Wayne.
- Buckle finish. A silver pin buckle matches Oystersteel; a gold buckle suits the two-tone 126711CHNR.
- Spring bars. Standard 20 mm spring bars; keep the originals with your bracelet so you can switch back.
Lugline straps made for the GMT-Master II
The GMT-Master II strap collection has curved-end rubber straps in 20 mm cut for the 40 mm ceramic case. Four picks:
- Black rubber strap for the GMT-Master II – the default for any bezel colour.
- Navy blue rubber strap – for the Batman and Pepsi.
- Green rubber strap – for the Sprite's green bezel.
- Grey rubber strap – for the Bruce Wayne.
Each product page lists the lug width and end type in the Fits box. For the swap itself, the spring bar tool ($13) and five minutes are enough; the dive watch strap change guide covers the technique step by step.
Brand and model names are used only to describe compatibility. Lugline is an independent brand and is not affiliated with, endorsed by or sponsored by Rolex SA. Watch not included.