Developed after the Mondo style of callingProduces hard, loud, raspy lick of a mallard hen as well as loud squeaky chatterReminiscent of the Cut Down Key Hole callsSingle reed O-ring insertStainless steel band Developed after a style of calling thats built its reputation on putting "Mondo" wads of ducks in the woods, the Rich-N-Tone Mondo Duck Calls are reminiscent of the Cut Down Key Hole calls made famous by guides hunting high pressured, public grounds ducks in the hardwood bottoms of Arkansas and Louisiana. Featuring a very short insert that creates very little back pressure, the Mondo has the range to produce the hard, loud, raspy lick of a mallard hen as well as the loud squeaky chatter desired by the public ground guides. Single reed call has an O-ring insert. Made in USA.Manufacturer model #: RNT379.