Nite Ize S Biner. The Nite Ize S Biner Carabiner's unique design gives you two carabiners in one, giving you a tool you can keep finding new ways to use. This stainless steel, double gated carabiner allows you to store valuables on one end and clip with the other or to connect items together. Get the ultimate key chain by securing your key ring to the S Biner's secure center bar attachment. The smooth wire gate operation makes clipping your important accessories easy. Warning: Not for use where disengagement could result in bodily injury or property damage. NOT FOR CLIMBING.