Home / Flies / Dry Flies / Hex and Drake - Big Mayflies / McCoy’s All Day Dun – Isonychia #10 McCoy’s All Day Dun – Isonychia #10$3.50 22 in stock McCoy's All Day Dun - Isonychia #10 quantity Add to cart Categories: Dry Flies, Hex and Drake - Big Mayflies Description Description Excellent Iso Dun pattern and very good day evening pattern when hatch is typically taking place. Size #10 Related Related products Sheets Extended Body Stacker – Wine #12 $3.00 Add to cart Regan’s Hex Spinner Natural Size #4 $4.50 Add to cart Galloup’s Tilt Wing – PMD #16 $3.00 Add to cart McCoy’s Boondoggle Spinner – Brown Drake #12 $3.50 Add to cart