A generous 20 inches in length (50.5cm) this 925 sterling silver smooth, round "snake" style chain is 1.2mm in diameter which makes it sturdy enough for almost any type of pendant.
I like this style of chain because pendants can slide on and off with ease, it's simple enough most pendants look nice on it, it is comfortable to wear and it's strong. It has a flattened loop end that most pendants can slide onto.
I also carry a 18 inches in length (45.75cm)1mm version.