These are models of fasteners for chain carabiners. It can be made in gold, silver or platinum . The size and weight of the product are shown in the image. These models are designed for 3D printing. These products have gone through a full production cycle and have proven their effectiveness. The quality is guaranteed. Carabiner size 12x6. as well as a margin in thickness, rubber matrices can be made from this 3D design. This is the frame of the carabiner and the internal mechanism of the carabiner. STL files are fully prepared for 3D printing. checked for errors and corrected. If you need another size of this shape carabiner, please contact me and I can choose the carabiner size according to your request.