The Cruncher is a superb all round fly, usually fished on an intermediate or floating line using a figure of wight retrieve.
You'll find many fisherman using the cruncher's around the reservoirs of England.
Use different colours of Stripped Peacock Quill from the eye of a peacock feather and Peacock Herl for the Thorax.
One of the most popular combinations is a natural stripped peacock quill for the body and bronzed peacock herl for the thorax. Simple but very effective.