Collection: 20mm

20 mm straps for watches

This page brings together our 20 mm straps, the width being measured at the lugs, across all materials. One of the most common lug widths, found on many dive watches and chronographs.

How to confirm 20 mm

Measure the space between the lugs, the part of the case the strap slots into, with callipers or a ruler. Many straps also carry their width on the lining.

20 mm watches

• Rolex: Submariner 40 mm (aluminium bezel), Submariner 40 mm (ceramic bezel), GMT-Master I, GMT-Master II (aluminium bezel), GMT-Master II (ceramic bezel), Daytona on Oyster bracelet, Daytona in steel with ceramic bezel, Daytona on leather strap and others.
• Tudor: Black Bay 58, Ranger 39 mm.
• Omega: Seamaster 300, MoonSwatch and Speedmaster Moonwatch.
• IWC: Pilot Chronograph 41 mm.

What 20-18 mm means

In a size like 20-18 mm, the first number is the lug width and the second the buckle width. We stock 20-18 mm and 20-16 mm; choose the one that matches your buckle.

Pick a material

Available in 20 mm: alligator, calf leather, vintage calf leather, rubber, rubber combination, NATO, shell cordovan, embossed calf, fabric, metal, Alcantara and salmon leather.

Questions we often get

Is 20-18 mm one size or two? Two measurements of the same strap: 20 mm at the lugs and 18 mm at the buckle.

What if my lugs are 19 mm? Then a 20 mm strap is too wide, and squeezing it in damages the strap. Choose the matching width: 19 mm or 21 mm.

When should spring bars be replaced? As soon as they are bent or corroded: they are what holds the watch on your wrist. Replacement spring bars are sold by lug width.