A good used Medeco cam lock. Includes 2 working keys ( keyed the same), a straight cam, an offset cam, an 1/8" thick or wide collar spacer and a 1/4" thick or wide collar spacer. the collar spacers can be used, if needed, to install the lock into an application that would require the length of the lock to be shortened. Also, each of the 2 cams can also be used in your application to lengthen or shorten the 'throw' of the cam.