See Through Practice Lock with Spool Pins CPL-5-PLUS
Transparent pin tumbler practice lock with Spool Pins is just like a common 5-pin Key-in-Knob Schlage cylinder with the C keyway. Includes 2 working keys and 1 blank. Solid and durable, this lock will last a lifetime with normal care. More realistic training than practicing on some of those odd-sized foreign locks.