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In mortise lock, the body and handle both are separate. Solo is a good company and the durability of lock is also good. It is fitted for main doors, bedroom doors. It can be easily removed while repairing. It is costly than other knob handles. Can cost Rs 1200 to Rs 1500 . It has got 3 stages to open and lock. It cant be opened easily without key. There are many designs and varieties and also looks beautiful.
Low quality Knob handles do not work after 8-10 months as their durability is less.