The TUFF Small Keyed Padlocks 3 Twin Packs (6 Locks) are designed for securing things like luggage, backpacks, and travel cases. These padlocks feature a single post shackle type made of steel with a shackle diameter of 1/8 in. The body material is also made of steel and comes in a gold color. The interior shackle width and height are both 5/8 in. These padlocks are suitable for both indoor and outdoor use and are manufactured in China.