These filters are working as intended. Any round gradient ND filter will limit your design options compared to the more flexible and much more expensive rectangular ND filters. For less than a third of the price, these filters work well.
Soft Silicone AirPods Case Cover With Visible LED - Compatible With AirPod 2/1 Cases, Keychain Accessory Included - Ideal For Men, Women, Girls, And Boys - Light Pink
37 Review
Canon Nikon Sony Panasonic FujiFilm Olympus Pentax DSLR Camera Bag, Evecase Large Vintage Canvas Messenger SLR Shoulder Strap Case - Gray
45 Review
Protective Silicone Cover For Samsung Galaxy Buds & Buds+, Shock Resistant With Carabiner And Fast Wireless Charging Compatibility - Fironst Case For Galaxy Earbuds 2020 (Black)
52 Review
A Durable And Protective CaseSack For Bose QuietComfort And SoundLink Headphones
41 Review