Sparrows Cut away locks come in with standard or High security pins. Currently all our cut away designs feature a barrel key with a schlage keyway This five pin Serrated version allows you to work on this specialized security pin. With several notches serrated pins bind in a very unique way. Serrated pins will give the picker a false set and at time may bind in the lock. With a cut away window the benefit of seeing and feeling the way serrated pins set and bind at the sheer line is invaluable.