Black - $8.00 Pink - $8.00 Blue - $8.00 $8.00 X Senyo's OCD is a great fly in low water conditions because it's unweighted and 3 1/2 inches long. Tied using a Senyo 25 mm shank, ostrich, and Angel Hair, for a fly that swims well in the water. Tagged: Intruder fly patterns Vendor: Aqua Flies Type: Flies SKU: