BV Micro Blades were created for those anglers who demand a tiny yet super effective spinner blade. Arrow Spin BV Micro Blades use the time-proven Bear Valley design. The copper versions are actual solid copper. The others are either gold or silver plated over solid brass. We listened when color combinations were discussed and now offer the best of those suggestions.Specifics:Size: 4/0 Blade Dimensions: 5/8 L x 1/2 W WARNING: Cancer and Reproductive Harm -www.P65Warnings.ca.gov