As the title says…had this a bit but doesn’t fit quite right, went with a different cage/PA style. Great cage, like new. Obviously MM can adjust this for you without much $$. putting the approx metric in as well. Cage length: 3-1/2” (90mm) Cage ID: 1-3/8” (35mm) Oval Ring “horizontal” measurement: 2-5/16” (58mm) Ring vertical measurement: 2” (51mm) Gap: 3/8” (9mm) Security screw. Price: $225 shipped (US) may consider international for cost plus actual shipping.