Smith & Wesson M&P Lever Lock Handcuffs. They are standard S&W Model 100s, but with finger activated double locks. Other manufacturers have had problems with finger activated double locks in that they can be accidentally activated too easily. S&W has solved the problem with levers that move away from the direction in which you’re cuffing so the lever won’t accidentally be engaged. Available in nickel or Melonite.
Available now at Handcuff Warehouse: Lever Lock Handcuffs