The Delta Frost Original has a plastic comb that’s got comfort tipped tines and rounded corners to provide maximum player comfort. The plastic comb is sandwiched in between the two reed plates using 8 screws to achieve the most airtight connection possible. All Delta Frosts have stainless steel cover plates that are opened in back for maximum volume production. Most harmonicas have brass reeds, but Delta Frost harmonicas have Magna Koppar reeds that are made of longer lasting, copper colored, phosphor bronze. If your Original ever goes out of tune, don’t throw it away! Just get a new set of Magna Koppars for it. All parts of the Delta Frost Original are interchangeable with both the Delta Frost Woody and Delta Frost Steelie. Intonation is 12-TET Equal Temperament.