[0.27 lb] You have one of two choices, get a different size ND filter for each lens with a different thread, or get adapters and worry whether you'll ever be able to unscrew your ND filter from the adapter. Even the highest end brass adapters are prone to stick. Kase Wolverine is the third option and so worth the price. I just leave this adapter on my Sigma 24mm lens and whatever ND or other filter I need, it drops right on. Perfect.

[77 mm to 95 mm] Kase makes great products that are very versatile when shooting on location.

[0.27 lb] Of the many manufacturers of magnetic filters, only Kase (as far as I know) offers the inlaid rings, which nest inside the lens' filter threads, reducing the risk of vignetting when you stack filters. The only disadvantage is you need to use the provided tool to hold the ring for installation and removal.

I bought this kit for 67mm, 72mm, and 77mm for a second benefit, to make it even easier to use my 82mm mag. filters with my smaller-diameter lenses. Installing the inlaid adapter lets me use the regular lens cap and hood until I need one of the filters. When I do, I can quickly attach the magnetic adapter (*different* from the regular screw-in adapters) to the inlaid adapter, then add filters.

However, the lens caps for my Sony lenses no longer have enough filter thread to grasp. I bought separate magnetic caps for them (but see my review of those...). For my Sigma lenses, the regular lens caps still work fine.

[0.27 lb] Does what it's supposed to do. Haven't lost a filter or lens cap yet.

[77 mm to 95 mm] Works like it supposed to do

[77 mm to 95 mm] The magnetic filter attachment is a step into the future and makes me use filters more without screw threads that are hard to get started and sometimes locked on. The filters themselves a high quality optically

[77 mm to 95 mm] I still have a very expensive PMVND filter screwed into a high end brass 49 mm to 82 mm adapter three weeks after the shoot. For whatever reason it simply will not come off. On the eve of a shoot when I knew I'd need my 55mm lens, I bought the Kase Wolverine ND and filter kit along with a couple of adapters like this one, and could not be happier. This is a life saver. Leave it on the camera with a Kase mag lens cover, then whatever filter or ND I need, it drops on. Magnet is strong and holds the lens cover or filter perfectly. Most important, they come off easily when I'm done with them. Worth every penny.

[0.27 lb] I bought this step-up ring to see if it would work with my brand of magnetic filters. It worked great so I will order other sizes.

[77 mm to 95 mm] Added this ring to my Kase filter kit. Its perfect!

[77 mm to 95 mm] Appears to be well made and a good fit. Very simply, it works as stated, it's a step up ring.