S-Biner Ahhh features sturdy gate closures on both ends, making it a multifunctional carabiner that you can use to attach and carry keys, water bottles, and camping gear; hang lanterns and lights; or clip two items together. Both ends function as bottle openers, to be able to pop open a bottle of your favorite beverage wherever you go! Laser engraved. Packaged in bulk. Black and Silver are made from stainless steel. Blue and Orange are made from aluminum.