The chunky connector bracelet is made from oxidized sterling silver and designed to stand out. The lock is not included. This chunky style connector bracelet can only be combined with the Small Lock. We like to mix metals. Endless possibilities. To determine your size measure the circumference of your wrist. As this bracelet is very chunky we advice to buy 2cm up. If your wrist is 17cm + 2cm, go for a 17cm connector bracelet with the Small Lock. 10mm thick. Sterling Silver.