Padlock supplied less cylinder, and no keys - WO. Padlock Requires special cylinder that we can provide (see options). When purchased less cylinder (WO), the padlock will require a specific cylinder driver. See related items tab. If you select a specific cylinder - please indicate how you would like these keyed: Keyed Alike or Keyed Different (only matters on quantites for 2 or more) - we will assemble the lock so it is ready to use.