• Made of SUS304 stainless steel, resistant to oxidation and durable for long-term use. • High hardness and resistance to deterioration, with integrated O-ring for waterproofing and easy maintenance. • Easy installation: the handle stem is placed without the need for a wrench. • Compatible with most watches, ideal for replacing used or damaged models. • Allows you to repair and customize watches by changing the color and style according to your preferences.