uxcell Aluminum Alloy Bag D Shaped Spring Loaded Carabiner Hook Split Keyring Silver Tone Carabiner lock prevents items from unwanted detachment. Carabiner Hook Size : 7 x 3.9 x 0.7cm/ 2.7" x 1.5" x 0.27"(L*W*D) Ring Diameter(Each) : 2.3cm/ 0.89" Total Length(Approx.) : 8.8cm/ 3.5" Very convenient and great for hiking, camping and even kayaking.