Nite Ize Slide Lock Carabiner -At Nite Ize, we believe no product is too small or basic to be improved. Exhibit A: the classic utility carabiner. We took a hard look at this ubiquitous device and saw two good opportunities to make it more efficient. We 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, we 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. Available in two sizes: #4 (perfect for attaching to a belt loop or backpack to carry larger items.) and #2 (for carrying smaller items like keys, and attaching to zipper pulls). Durable Stainless Steel Locking Utility CarabinerSecure stainless steel wire gate with a slide-to-lock featureSize #2 Dimensions: 1.7" x 1.1" x 0.1" Size #4 Dimensions: 3.1" x 2.0" x 0.1"Size #6 Dimensions: 4.6" x 3.1" x 0.2" Size #2 Weight: 0.2oz 7.0g - Weight Rating: 10lb 4.5kgSize #4 Weight: 1.1oz 31.00g - Weight Rating: 75lb 34kgSize #6 Weight: 3.1oz 88.00g - Weight Rating: 100lb 45kgWARNING: NOT FOR USE WHERE DISENGAGEMENT COULD RESULT IN BODILY INJURY OR PROPERTY DAMAGE. NOT FOR CLIMBING.