Rolex · Day-Date II
Strap for Rolex Day-Date II 218238-0038
The Day-Date II Yellow Gold Fluted Champagne Roman takes 21 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
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Lug width

Straps for the Day-Date II 218238-0038
Selected for the 21 mm lug width · workshop selection
What length do I need?
Measure your wrist with a tailor's tape or a piece of string, comfortably snug.
| Wrist circumference | Length (long side / short side) |
|---|---|
| 15.0–16.4 cm | 120 / 70 mm |
| 16.5–17.8 cm | 125 / 75 mm |
| 17.9–19.0 cm | 130 / 80 mm |
| 19.1–20.3 cm | 135 / 85 mm |
| 20.4–21.6 cm | 140 / 85 mm |
| 21.7–22.9 cm | 145 / 90 mm |
The ready-to-wear strap is 115 × 75 mm. For a smaller or larger wrist I make it in the right length: order your length.
What I'm asked about the Rolex Day-Date II 218238-0038
What strap size does the Rolex Day-Date II 218238-0038 take?
The Rolex Day-Date II 218238-0038 needs 21 mm between the lugs, usually 18 mm at the buckle. It's the size I've been fitting on it for years.
Can the strap on the Rolex Day-Date II 218238-0038 be changed?
Yes. It has spring bars between the lugs: with the right tool the strap comes off in a minute. If you'd rather not risk a scratch, I do it in the workshop.
Can I put a leather strap on the Rolex Day-Date II 218238-0038?
Yes, in 21 mm leather. On a 41 mm case a calf strap works every day; if you want something more, alligator.
Which strap do you recommend for the Rolex Day-Date II 218238-0038?
A 21 mm calf strap, for every day. You'll find it ready in the 21 mm collection. If you'd rather have something built on your wrist, the Casati atelier.
More Day-Date II
- Rolex Day-Date II 21820621 mm
- Day-Date II Platinum Black Arabic21 mm
- Day-Date II Platinum Silver Diamonds21 mm
- Day-Date II Platinum Ice Blue Arabic21 mm
- Day-Date II Platinum Black Diamonds21 mm
- Day-Date II Platinum Ice Blue Roman21 mm
- Day-Date II Platinum Diamond Romans21 mm
- Day-Date II Platinum White Roman21 mm
More Rolex in 21 mm
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For changing the strap
The next step
The right strap isn't chosen. It is built, together.
From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only
Bespoke straps for Rolex, in the atelier or by video call: casatimilano.com






