MASTER LOCK 1-1/2 x 13/16 shank will keep a 30 amp cord yours, perfect fit. Take a look at my misc album for the package.
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Hoglou the DH & BK the DW (retired and happy)
WestGA KM4HQQ 146.640mhz
L'IL Foot" 2014 Sunseeker 2300
"Harry" the JK toad in the mirror
Check out the "mods" in the albums