Southland 520-754HN Reducing Tees, 1" x 1" x 3/4", Black Since our beginning in 1917 as the Mueller Metals Co. and later Mueller Brass Co., Mueller Industries has built a well-earned reputation for offering the finest-quality plumbing, HVAC, refrigeration, and industrial products in the industry. Features Malleable pipe fittings Product complies with ASTM: A197; ANSI: B16.3, B16.14; B1.20.1 for material, dimensions, and threading All fittings are pressure tested, 150 PSI Zinc coating is applied by hot dip process USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.