They easily screw onto the lens. and the lens cap fits perfectly. Now I did buy 55mm 3-piece first by mistake as I thought I needed the 55mm as my lens was 55mm but in fact a 55mm lens is a 52 mm ...? werid but Overstock returned and shipped the new 52mm right away. Now onto the review. The hoods are all great and screw on perfectly along with the lens cap fitting perfectly. Also the case they come in is nice and small and can easily fit into a pocket or camera case with no problem. I would re recommend this to anyone.