
They are all of good quality! This one is no exception. In case you're wondering, it's all a "tunnel" from the hole at the top to the hole at the bottom, so it's impossible to fill one with gravel without filling them all. The top tapers to the bottom of the first "stone" but I think you can see it in the photos.

🐟 Spectrastone Shallow Creek Regular: Enhance your Freshwater Aquariums with a 5-Pound Bag
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Aquarium set 6.8 l (lighting, cover, filter) Tetra Cascade Globe Duo Waterfall black
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18lb BLQH Aquarium Gravel River Rock with Pebbles Stones – Natural Polished Decorative Gravel for Garden Landscaping and Ornamental Rocks in Mixed Colors
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🐠 AquaticHI 27-Inch Aquarium Tongs - 100% Reef Safe - Multi-Purpose for Fresh & Saltwater Fish Tanks - Clip Plants, Spot Feed Fish & Coral - Keep Hands Dry
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Jasonwell Magnetic Aquarium Fish Tank Glass Algae Cleaner - Floating Brush (L Size)
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🧲 Efficient Magnetic Fish Tank Cleaner: KEDSUM Floating Clean Brush with Handle Design
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Vacuum cleaner TEQQO Aquastick 3 in 1 Power, grey/turquoise
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Efficient 2-In-1 Magnetic Fish Tank Cleaner With Non-Slip Design And Scratch-Free Blades
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