Locking S-Biners will help organize, connect, carry, and keep your keys, valuables and other items extra secure. Made of high quality stainless steel, the SlideLocks are available in two sizes (#2 & #4) and feature two simple, innovative plastic sliders that keep the gates securely closed until you choose to unlock it. Each gate can be independently locked for convenient access. The smaller MicroLock is the perfect size to hold keys or connect smaller items, using a durable plastic center lever that twists to securely lock the gates. Micro are rated to hold up to 3lbs. 1.39" x 0.59" x 0.27" . 0.14 oz. #2 hold up to 10lbs. 2”x1”x0.3”. 0.28 oz. #4 hold up to 75lbs. 3.55”x1.6”x.44”. 1.16 oz. Specify Black or Stainless.