What you have here is a Canon lens that comes with auto focus to help you take that perfect picture. If you want to use a filter on the lens, then the filter size is 58 mm.
From Camix
Canon EF-S 55-250mm F4-5.6 IS STM Telephoto Zoom Lens [Brand New]
This product is also available at 8 unverified merchants.
Too expensive? Get a notification as soon as the price drops.