[MORE DURABLE]: Oleyzee retractable keychain feature 0.04-inch stainless steel cord coated with abrasion-resistant nylon to prevent rust and reduce friction, ensuring long-lasting durability. The sturdy extension cord can hold up to 10 pounds without breaking. [STRONG TENSION]: The keychains features a 24-inch extendable cord capable of withstanding up to 10 ounces of tension, keeping items securely in place without shifting. Easily attaches to belts or backpacks—no need to remove IDs or keys when opening doors. [STURDY MATERIAL]: Anti-theft tactical carabiner key chain features a durable ABS shell and a 30mm diameter metal keyring. Inside, a high-quality, powerful retraction spring ensures smooth cable winding, preventing slack or diminished functionality even with long-term use. [VERSATILE USE]: Key chains men utilizes corrosion-resistant metal components, suitable for daily or outdoor activities—hold multiple keys, pliers, flashlights, compasses, fishing gaffs, or bottle openers to meet camping, hiking, or fishing needs! [HIGH QUALITY]: Premium ABS plastic ensures lightweight durability, while high-grade metal spring mechanisms guarantee lasting elasticity for secure, non-loosening closure. We deliver rigorously tested, high-quality key holder that significantly exceed industry performance standards. Oleyzee Upgraded retractable keychain have a 60CM long steel cord, longer than the regular model, and can withstand up to 10 oz of tension, heavy duty key chain is made of 0.04 inch stainless steel rope, the steel rope is coated with abrasion-resistant nylon to minimize friction, and has been tested for more than 100,000 times of expansion and contraction, the key chains are equipped with a sturdy coil spring makes it a heavy duty retractable keychain that exceeds the testing standards of similar products.