Brass Spring Ring Clasps 9.3mm.

Here's a breakdown of the features:

• Size: 9.3mm: This measurement specifies the diameter of the spring ring clasp when it's closed. The 9.3mm measurement indicates the size of the ring where the spring mechanism is located.
  
• Brass Material: Spring ring clasps are typically made of brass, a durable and corrosion-resistant metal commonly used in jewelry making. Brass is often chosen for its strength and ability to hold up well over time.
• Spring Mechanism: Spring ring clasps feature a spring-loaded mechanism that opens and closes with a small lever or trigger. This mechanism provides a secure closure, ensuring that the jewelry piece stays in place when worn.

Brass spring ring clasps with a size of 9.3mm are versatile components used in various jewelry designs. They provide a secure and reliable fastening solution while adding a decorative touch to the finished piece. These clasps are available in different finishes and styles to suit different design preferences.