1 - Aluminum 5 - Inch Gutter Outside Strip Miter Color Musket Brown 1 - Aluminum 5 - Inch Gutter Outside Strip Miter Color Musket Brown. Used for connecting gutters in a 45-degree corner The miter is joined to the gutter using zip screws Made of Strong Heavy-Duty Gauge White Finished Aluminum. (not like the material sold online and large box stores) to be used with 5 - Inch Gutters Should be sealed with GEOCEL CONSTRUCTION TRIPOLYMER GUTTER AND NARROW SEAM SEALANT made for the use of aluminum rain gutters. Best not to use with just any brand silicone sealants, as they don?t hold up as well. (you can find this in our other seamless gutter related listings). A High-Quality Product Made in the USA Baked-on factory finish for low maintenance Accessory for 5 - Inch Gutters