Arcus Viola Bow T5 Round Stainless Steel. T SERIES - The T-bows are designed to precisely fit medium sizes violas and the best modern strings. If the string length of your instrument is around 37 cm, they should fit perfectly. The warm and brilliant sound of the T-bows allow to find new sound colours in your instrument. The combination of a low weight and a mass distribution towards the tip and heel provide a fantastic combination of agility and stability.