This is a used Schlage Primus cylinder with two keys.  The keyway is CP.  This cylinder is fully pinned up, including all finger pins.  This is a high security lock.  The keys are restricted.  The tailpiece can be changed by you or a locksmith if you want it to function in a padlock, deadbolt, or other type of lock.  Please look at my other items on eBay because I'll combine shipping to save you money if you make all purchases within one hour of making the first purchase.  This will be a private listing (only I'll know the identity of the purchaser) since photos of the keys have been shown.  If you want to get the cylinder re-keyed for any reason within three years of purchase, I'll do it for free (in terms of labor), but you will have to send the cylinder and key(s) to me, pay for the new keys, and the postage to mail the cylinder and new keys back to you.  I'll provide the purchaser with additional information regarding this offer.  Search words:  Medeco, Abloy, Kaba, Bilock, Vachette, Assa, Anchor Las.