Made of high quality, weather-resistant stainless steel, this ultra-handy accessory with its dual spring gates will hold, secure, and connect everything from house keys and cell phones to technical camping gear. Attach valuables to the center bar for ultimate security, link gate ends to a second set of items and anchor, or connect many items together. Smaller-sized S-Biners are excellent for connecting two zipper sliders on backpacks, duffels, and suitcases. 3 sizes included in pack Size #2 dimensions: 2x .88weight rating: 10 lb. Size #3 dimensions: 2.63x 1.13weight rating: 25 lb. Size #4 dimensions: 3.5x 1.5weight rating: 75 lb.