5 reversible keys Non-corrosive interior parts Comes with a code card Large number of key differs: a total of 10 pins in two independent opposing rows Patented anti-pick pin system: Neutral experts confirm high picking resistance is achieved with well-balanced measurements between bottom pins and counter pins High precision manufacturing: Top quality materials utilized to produce brass body and cylinder plug, bronze pins, brass mmushroom pins, sntered steel cam and rustfree springs giving trouble-free use with long life Handy key: No sharp edges, reversible key allows easy operation of the lock, even in the dark