Hello, I've been a longtime reader here, but first time poster. I bought a Mature Metal Jailbird. The quality is excellent, but I unfortunately made a mistake with the sizing. I paid $405; I am asking $300 or best offer. The cage is 1.25 inches/31.75mm long and 1 inch/25.4mm in diameter with a 1.74 /44.45mm ring. It also has the built-in security screws with both keys. Ring Style: Oval Cage Length: 1 1/4" Length Ring Size: 1 3/4" Ring Cage Diameter: 1" Dia. Lock Options: Security screw & keys Second Pin: None Third Pin: None Cage/Ring Gap: 3/8" Gap If you have any questions, let me know. Thanks!