this is leather craft material brass revet and ringAnd it is the ingredient of smartkey leather case that we make.If you lose an accessory while using our Smart Key leather case product, you can purchase it.You can purchase the same key accessories you bought.It's a 3ea product.Number 1, Head width, 10mm, inside height 20mm, column thickness 4mmNumber 2, Head width 10mm, inside height 4,5mm, column thickness 4mmNumber 3, Head width 8mm, inside height 5mm, column thickness 3mmNumber 4, Diameter,
