【Excellent Quality】Screw lock carabiners are made of high quality 304 stainless steel, rust-proof and anti-corrosion, suitable for all kinds of bad weather. 【Lock Design】The internal thread of the stainless steel carabiner makes it easy to unscrew the hex nut with one hand to open or close the fixing carabiner. Compared with other carabiners, our screw lock steel carabiner prevents slipping or loosening. 【Multipurpose】Perfect climbing quick carabiner connector, used for chain, rope, cable connection, gate closure at screw to increase security. For your safety, please turn off the screw lock. 【16 Safety Carabiners】Interface: 6.5mm, inner width: 13mm, thickness: 5mm, outer length: 50mm. Load capacity: 140kg/300lb. 【Wide Range of Applications】Locking carabiner very suitable for boating, sailing, fishing, hiking, cycling, camping, hiking, whale watching, etc. bump, locks, buckles, hooks, chains, key rings, accessories, utility tools, fastening tools and other gears. (M5 Stainless Steel