Black chain stainless steel Length: Approximately 54cm, Thickness: Approximately 3mm (Please allow for some error) Pendant top: Cross, stainless steel 316L This is a set of a black chain and a black cross pendant top. The inner diameter of the bale (the part where the chain goes through) is about 5mm, so a chain with a width of 4mm should fit with some room to spare. Size (including bale) Length: 5cm, Width: 2.6cm, Thickness: 2mm