A high-quality, extra-large key engineered to make double-locking and unlocking restraints faster and easier. The oversized, knurled aluminum barrel keeps weight low while providing a positive grip for quick manipulation. The flag tip and double-lock pin are made from heat-treated alloy steel for strength and long service life. A swivel key ring allows easy turning and prevents tangles in kit or on keychains. Compatible with all standard-type handcuff locking mechanisms. Made in the USA. Available in Nickle or black. Overall length: 4 3/8" (4.375") Barrel: Oversized knurled aluminum (lightweight, slip-resistant) Tip / Double-lock pin: Heat-treated alloy steel (high strength) Key ring: Swivel ring for easy turning and tangle resistance Compatibility: Works with all standard-type handcuff locking mechanisms Finish: Black (available) Origin: Made in the USA