stainless steel Standard
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  specification : Stainless steel 420ï¼ heat treatment  (SL-01-HRC)
 1. Handcuffs length 276mm
ã2. Handcuffs lower and upper plates thickness 2.5mm
ã3. Adjustable 20 gears (including the last gear) with grooves, gear thickness 3.5mm
ã4. When first gear is locked, the maximum internal diameter is 78mm
ã5. When last gear is locked, the minimum internal diameter is 50mm
ã6. Weight 276g (not including keys)
ã7. Accessory: 2 keys for each set of handcuffs, Key length 43.5mm
ã8. Handcuffs tensile strength are as follows:
ãããa. When first gear is locked: can hold 250kg
       (250kgf and above) without fracture or deformation
ãããb. When all gears are locked: can hold 550kg
       (550kgf and above) without fracture or deformation
ã9. Handcuffs lower and upper plates with tensile strength that
      reach 250kg (250kgf and above) without fracture or deformation
ã10. Double arrows inside the handcuffs, 3 gears per piece.
ã11. Salt resistance: according to ASTM B117, 12 hours, no rust