A high quality extra large key designed to make double locking and unlocking restraints faster and easier. The extra long aluminum barrel is oversized and knurled for lighter weight and easy handling. The flag tip and double lock pin are made from heat treated alloy steel for high strength and durability. The key ring is on a swivel for easy turning. Compatible with all standard type handcuff locking mechanisms. This key is very similar to the Zak Tool #10 Round Swivel Key, only larger: 4 3/8". Made in USA. Available in nickel or black.