PRODUCT INFORMATION AND FEATURES: ALL PARTS MADE FROM STEEL (PICKLE IN OIL) WITH INTERNAL PARTS CASE HARDENED. DOUBLE TUMBLER LOCKING SYSTEM. HIGH TENSILE SPRING (56-58 HRC). REINFORCED LINK HANDCUFF. 9 LOCKING POSITION ON 3.6 MM THICK RATCHET. HANDCUFF CHEEKS – 2.5 MM THICK PER SIDE. HANDCUFFS ARE NICKEL PLATED FOR REINFORCING, SCRATCH AND WEAR RESISTANT. INDIVIDUALLY PACKED WITH 2 KEYS. WEIGHT: 400 GRAMS. STATIC DIAMETER – 80 MM (CUFF INSIDE DIAMETER). STATIC LOAD APPROXIMATELY 1 500 N (PULLING FORCE). TOTAL LENGTH OF LINKED HANDCUFF – 330 MM 10 RIVET POINTS GALVANIZED SINGLE LOCKING KEYS Can be made with a chain in place of link