Brass Large Shackle Key Holder (Hermann Oak Harness Leather, Core-Dyed Black Model) This key holder features a large shackle and Hermann Oak harness leather. The shackle is made of stainless steel, and the leather is Hermann Oak harness leather. This key holder is modeled after a shackle, a U-shaped fitting used for connecting ropes or mooring ships. Both the shackle and the leather have a high-quality feel, and considering the size and quality, it's a great value. The leather strap has a snap closure, allowing you to attach it to a bag handle or belt loop. As a bonus, a genuine leather suede motel key is included. *Because it is made of genuine leather, it will have wrinkles and natural markings from the beginning. The appearance is as shown in the photos, so please refrain from purchasing if you consider this a defect. Please comment if you have any questions. <Hermann Oak Harness Leather> Hermann Oak leather uses only the highest quality steerhide from the United States. It is produced over a long period of time using tannins extracted from the bark of high-quality natural oak bark (oak family plants). This results in a firm, high-grade nubuck leather that contains a large amount of animal fat. Hermann Oak leather is also known for its toughness, as it has been used for saddles (kura) that American cowboys have loved for a long time. One of the characteristics of Hermann Oak is that it undergoes dramatic aging.