The product is a lot of 4 3” 90 degree elbows with 1” thick insulation, having an outer diameter of 3-1/2”. These fittings are made by the brand Armacell, known for producing high-quality insulation and related products. The elbows are designed for use in various industrial applications, particularly in hydraulics, pneumatics, pumps, and plumbing systems. With their durable construction and reliable brand reputation, this lot of 90 degree elbows is suitable for a variety of commercial and industrial projects.