These Alcyon handcuffs are finished in black but they come with the unique universal joint in place of the normal chain.  This joint is only found on handcuffs made at the Larranaga factory but is so good we would not be surprised to see it more often in the future.  Covert and swat teams favour this finish on account of its non reflective qualities.  It also complies with the salt spray test so you could arrest someone under water! 

Type of Link	Universal joint
Key	Standard
Construction	Riveted
Mechanism	Double lock treated
Toothed	Double
Weight	350 grs.
Length	225 mm.
Minimum opening	50 mm.
Maximum inside perimeter	165 mm.
Minimum inside perimeter	200 mm.
Locking Position	20
Construction	Steel K-60
Rockwell B Hardness	HRB 92
Thickness folded	20
Complies with salt spray test and resistances tests