Smith & Wesson 300 Hinged Handcuffs, Nickel Smith & Wesson forged its reputation for high-performance, high-quality precision and ruggedness when it first opened its doors in 1852. Take a look at where they've been and where they're going. Smith & Wesson 300 Hinged Handcuffs, Nickel Features: Material: Carbon Steel Color: Silver Finish: Nickel Style: Hinged Lock Style: Two Sided Special Features: Comes With Two Keys.