Hareline Synthetic Quill Body. Using natural quills for fly bodies can be a painstaking and heartbreaking task. With these Synthetic Quills you get much more length and much more strength. Simply wrap the Synthetic Quill Body on your fly body and apply a thin layer of Deer Creek Diamond Fine or Clear Cure Goo Hydro and there you have it... a perfect quill body. Want a more natural look? Check out the Stripped Polish Peacock Quills from Polish Quills.