Hex lag screws are available in sizes 3/4 - 3-1/2 and thread pitches from 10 - 20. Made from steel and zinc plated for corrosion resistance, these hex head lag screws are Ideal for heavy-duty construction and projects 2 Pack Fish Breeding Box, Large Size Fish Tank Breeder Net, Aquariu It can effectively improve the reproduction rate and survival rate of fish fry. Fish Tank Breeding Breeder /Fry/Net Box Hatchery w Suction Cup... Light weight materials that can be suspended in water, as long as you add a fixed suction cup, can be firmly placed where you like. Upgrade design, easier to install than ever before. Suitable for home farming and aquariums. Fish Tank Divider Uxcell Nylon Mesh Fish Fry Hatchery Breeder Box Separation Aquarium Isolation Box
