Eave / Drip Flashings help channel water into a gutter or away from the façade, which keeps water from wicking back under the shingles. They are fastened along the edge of the roof to protect the façade from stains and damage. They also provide support for the shingles that extends past the decking.3" x 3"/4" x 10' Charcoallearn more here
EAVE/DRIP FLASH 3"X3/4X10' CHAR