If you are not looking for a keyboard review, the number may refer to: Rolex Day-Date 18238/18038 Go to product viewer dialog for this item.
The O-ring mount provides a consistent level of "bounce." It isn't as mushy as some silicone-based gasket mounts but offers more relief than a rigid top-mount. 18838x
Certain long-handle ratchet or socket sets (like those from GearWrench or Capri Tools) occasionally use similar SKU patterns for "Master Sets". Community Perspectives “If you're looking at the Rolex 18238 Go to product viewer dialog for this item. If you are not looking for a keyboard
Precision-machined aluminum with a heavy internal weight (often brass or stainless steel). 18838x