New 52mm Silver Lens Adapter Ring Tube for Canon PowerShot A55 A60 A70 A75 A85
Convert your Canon digital camera (above model numbers) to accept standard 52mm filters
52mm female on one end (the widest end in the photos) and on the other end it's a special fitting only for the Canon PowerShot A55 A60 A70 A75 and A85 (a female fitting on that smaller end as well).
The length is 30mm.