14mm black and silver Agents of S.H.I.E.L.D. charms hang beneath 16mm round silver frame connectors.  The earrings use stainless steel fishhook earwires and are 1.5" long.
 
All metal used is hypoallergenic, nickel-free, and is sterling silver, silver or gold-plated, or stainless steel unless noted otherwise. Every item is handcrafted, custom-made, nothing mass-produced.