So I was looking for a 40.5mm to 58mm step up ring for my OLY kit lens. The B+W ones were running around 20 bucks, which is rather pricey if one asks me. I was having a hard time finding a reasonably priced one until I ran into this one: Amazon.com: Fotodiox Metal Step Up Ring, Anodized Black Metal 40.5mm-58mm, 40.5-58 mm: Electronics So I ordered it and it was shipped USPS first class. It was in my mailbox about 4 days after I ordered it. For what it is, it works perfectly. Allows me to use 58mm filters for both my 4/3 40-150 and my m4/3 14-45.