The medium cane Turkish Duduk or Mey reed with bridle is approximately 3 1/2 to 4 inches in length. The width of the mouth end is 1 to 1 1/2 inches. The open end can vary from 1/2 to 5/8 inch. For a proper fit, use hemp, bee's wax, and/or sand the reed end to fit. Sizes vary.