Disc tumbler lock

A disc tumbler or disc detainer lock is a lock composed of slotted rotating detainer discs. The lock was invented by Finnish founder of Abloy, Emil Henriksson (1886–1959) in 1907 and first manufactured under the Abloy brand in 1918.

Not to be confused with wafer tumbler lock.
For the motorcycle or scooter security device, see disc-lock.
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