This solid black O - Ring can accomodate a strap of 10mm.

This solid black O - Ring can accomodate a strap of 10mm.

This solid blue O - Ring can accomodate a strap of 10mm.

This brass electroplated (gold-like colour) O - Ring can accomodate a strap of 10mm.

This Burgundy O - Ring can accomodate a strap of 10mm.

This solid green O - Ring can accomodate a strap of 10mm.

This Solid grey O - Ring can accomodate a strap of 10mm.

This solid blue O - Ring can accomodate a strap of 10mm.

This nickel plated (silver colour) O - Ring can accomodate a strap of 10mm.

This nickel plated (silver colour) O - Ring can accomodate a strap of 10mm.

This solid pink O - Ring can accomodate a strap of 10mm.

This Purple O - Ring can accomodate a strap of 10mm.

This solid red O - Ring can accomodate a strap of 10mm.

This solid yellow O - Ring can accomodate a strap of 10mm.

This solid black O - Ring can accomodate a strap of 10mm.

This “Gun Metal” (deep shiny grey colour) O - Ring can accomodate a strap of 10mm.

This brass electroplated (gold-like colour) O - Ring can accomodate a strap of 10mm.

This nickel plated (silver colour) O - Ring can accomodate a strap of 10mm.

This aged brass (brownish colour) O - Ring can accomodate a strap of 10mm.