Copper Gutter Miters Our European made 90° inside and outside copper half-round gutter miters make perfect corners everytime! Copper Inside Miters 4″ Inside Miter for Half-Round Copper Gutters $50.94 - $55.28 5″ Inside Miter for Half-Round Copper Gutters $55.07 - $59.76 6″ Inside Miter for Half-Round Copper Gutters $57.66 - $62.57 7.6″ Inside Miter for Half-Round Copper Gutters $87.82 - $95.30 Copper Outside Miters 4″ Outside Miter for Half-Round Copper Gutters $50.94 - $55.28 5″ Outside Miter for Half-Round Copper Gutters $55.07 - $59.76 6″ Outside Miter for Half-Round Copper Gutters $57.66 - $62.57 7.6″ Outside Miter for Half-Round Copper Gutters $87.82 - $95.30