Sperzel 6 In-Line Locking Tuners Brushed Chrome 6 In-Line Locking Tuners Brushed Chrome You're guitar will stay in tune without locking nuts by using Sperzel's 6 In-Line Locking Tuners Plus, this hassle-free hardware improves tonal response The In-line models feature staggered tuning-post height, eliminating the need for string retainers You're guitar will stay in tune without locking nuts by using Sperzel's 6 In-Line Locking Tuners