Set of 4 Hinger timpani (31", 28", 25", 23"). Drums were manufactured in late 1970's and have been played professionally by an orchestra. Frames realigned and centered and refinished by Precision Classic Timpani. All metal brushed and polished, all moving parts lubricated and adjusted. Can replace bowls with bowls of buyer's choice (price adjustment). Drums include 'used' shipping cases and new head protectors. Offering new synthetic heads of buyer's choosing.