Stainless steel is an important corrosion-resistant material and does no harm to the skin. Therefore it is not only used for making cases but also is common on large scale for watch straps and crowns.
Stainless steel has a chromium-rich oxide coating (passivation coating) on the surface, which can protect the stainless steel from oxygen and water. Stainless steel is one of the fundamental factors in watches waterproof.
Prepare tools: professional strap remover (usually sent when you buy a watch or buy it yourself, do not use needle-like objects instead)
First of all, before preparing to remove the strap, please look at the arrow on the back of the strap, there are arrows on the strap grain that is removable. Then, loosen the handle of the strap remover, after that, but the strap into the slot, and keep the steel pin of the strap remover aligned with the pinhole; the steel pin of the strap remover is in the direction of the arrow. Then tighten the handle of the strap remover inward, in the meantime, the steel pin (lug) connected to the strap will be ejected. Finally, use pliers to pull out the lug.
When assembling the strap, insert the lug in the opposite direction of the arrow, and the round end of the needle is advanced, that is, the smaller end.