Camec One Key Fits All Barrel & Housing Locks

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Ditch all your different keys for Camec's "One Key Fits All" barrels and housing system. Designed to fit CAMEC doors, boots, lockers and fillers.
Features:
Supplied with dust covered stainless steel capped zinc plated barrels.
Matching keys and 1 exchange key (Red) to remove the old barrels.
They maybe used in other manufacturers products such as Thetford with additional adaptors*.
1x 32mm barrel is included in kit to only fit T-handle boot handle (042091)
2000 key combinations for added security.
2pk | 4pk | 6pk | 8pk | 12pk | 50pk quantities.
bettarv.com/one...

[@jennimareeh]

I just received these from Camec and I used the red key to get the old barrel out but on the directions it says for new barrel insert retainer first but I’m not sure what this is?