Sex and Mischief Collection from Sportsheets. Metal Handcuffs: Make love under lock and key with these Metal Handcuffs. No frills, no fuss these handcuffs do the job the old fashioned way with classic style. Details Nickel free metal handcuffs (85 gram e or approximately 3 ounces weight) with quick release. Fully locking cuffs with metal keys included. Materials: Nickel free metal. Includes: 1 pair of Nickel Free metal handcuffs with keys.