29 year olds Asonu McKenzie and Reshaun Nembhard have been jailed for a total of 22 years after committing 12 robberies last year.
They would locate their victims and approach them from behind, strike them on the head and steal their high value watches.
The injuries ranged from grazes and lacerations, to fractured skulls, with one of the victims still under assessment for losing his sight.
