Series 5506 aka "Restauro" is shorter than the traditional round and longer than a Spotter/Retouch brush. The "in between" length perfectly combines the benefits of each brush for excellent control. Originally designed for the Restoration department at The Uffizi Museum in Florence, with a triangular handle for hours of precision work with no hand cramping. The Maestro designation denotes the highest quality winter male Kolinsky Red Sable hair from the Tobol River region in Eastern Siberia. Manufacturing from Germany.