These are vintage Hollywood Wave  Clips, Model No. 300/4 designed for styling finger waves, typically made of lightweight aluminum.  There are a total of 24 Clips.

• Usage: Used to hold hair in place while setting waves and curls.

• Era: Popular during the 1920s to 1940s for achieving vintage hairstyles.

• Material: Rust-proof, metallic construction for holding power. Smoke  Free