This is a trombone mouthpiece from Taguchi Wind Instrument Workshop, founded by a former technician from Willies Mouthpieces. It's a 5G size, with a rim inner diameter of 25.50mm and a throat diameter of 7.00mm. It's the largest size among the trombone mouthpieces from this manufacturer. The playing experience gives a smooth impression, with no harshness in volume or tone, and an even response across the range. It has been used only 1-2 times and is practically unused.