These are models of fasteners for carabiners for chains. It can be made in gold, silver or platinum of your choice. The size and weight of the product are shown in the screenshots. These models are designed for 3D printing. These products have gone through a full production cycle and have been proven effective. Quality guaranteed. The size of the carbine is 12x8 without a loop. Weights in various metals are indicated in the screenshots. The dimensions of the jewelry lock are shown in the screenshot. . A carbine can be made 1 time. as well as a margin of thickness, rubber matrices can be made from this 3D design. The product has 1 file in editable 3DM format, where you can make changes to this 3D model if necessary, and 2 files in stl format. This is the carabiner frame and the internal mechanism of the carabiner. STL files are fully prepared for 3D printing. checked for errors and fixed. If you need another carabiner size of this form, please contact me and I can choose the size of the carabiner according to your request