Product Specifications
This set includes 70 silver-colored lockable pin backs, presented in a transparent storage box for neat organization and convenient transport. Each pin back measures approximately 0.39 inches or 1 cm in diameter and 0.19 inches or 0.5 cm in height. The pin backs are made of nickel-plated copper and feature a compact metal structure suitable for most standard pin specifications.

Core Features
Designed with a spring-loaded locking mechanism, these pin backs allow for quick attachment and release without the need for tools. The base can be pressed to lock and pulled up to release, making pin changes simple and efficient. The nickel-plated copper construction provides a robust feel and helps resist wear and corrosion, supporting secure placement with repeated use.

Suitable Applications
These metal pin locks are suitable for securing a wide range of pin accessories, including brooches, badges, name tags, bags, hats, enamel pins, collectibles, display books, and DIY projects. The quantity of 70 pieces works well for home use, events, regular replacement needs, or as spare pin backs for collectors who frequently change or organize pins.

Product Summary
This 70-piece set of lockable pin backs combines a standard size, durable metal material, and simple push-lock function in a practical silver design. With a clear storage box included, it offers an easy and organized solution for keeping pins securely in place for both everyday and collection-focused use.