2 3/8 inch Aluminum Gutter Round Drain Outlet 1- 2 3/8 Mill Finish Aluminum Round for low maintenance Used with 5 or 6 Inch Gutters. With 2 x 3 Downspouts. Heavy Gauge aluminum used (not like the material sold online and large box stores) Should be sealed with GEOCEL CONSTRUCTION TRIPOLYMER GUTTER AND NARROW SEAM SEALANT A High-Quality Product Made in the USA