The Smith & Wesson's model 300 hinged police handcuffs are more restrictive than standard chain handcuffs. The model 300 is constructed of carbon steel and is nickel plated. Satin nickel plating provides corrosion resistance and makes the handcuffs appear dull or cloudy to prevent glare in tactical situations where cover is required. The hinged design safely restricts movement providing more security for officers. Smith & Wesson's model 300 is a double locking handcuff that utilizes the slot lock double locking mechanism. Simply insert the back of your handcuff key into the slot and pull towards the keyhole to double lock these handcuffs. 

Specifications:

• Wrist Opening: 2.04
• First Notch Inside Perimeter: 8.40
• Last Notch Inside Perimeter: 5.80
• Tightest Inside Width: 1.80
• Weight: 10.0 oz
• Locking Positions: 23
• Distance Between Cuffs: 2.00
• Maximum Overall Length: 8.13
• Two Keys Included