Use so you don't lose it! The Nite Ize S Biner design provides the option for ultimate security of keys and other important accessories by easily securing the items to the center bar.Smooth wire gate operation. Store valuables on one end, clip with the other. Connect items together. Black is titanium finish. Spectrum is titanium finish. Stainless is stainless steel finish. Load Limit: 25 lbs. Size: 2 5/8" x 1 1/8" Weight: n/a. NOT FOR CLIMBING!