Nite Ize SlideLock 3.1 in. D Stainless Steel Black Carabiner Key Holder

At Nite Ize, believe no product is too small or basic to be improved. Exhibit A the classic utility carabiners. They took a hard look at this ubiquitous device and saw two good opportunities to make it more efficient. They designed an innovative slide-to-lock feature that securely locks the gate with a simple push and slide movement and unlocks when you want it to just as easily. Then, instead of a bulky tubular construction, they designed a cross sectioned, rectangular stainless steel body that's durable, low profile and slim it feeds more easily through smaller openings and rests flat in pockets.