Fender Locking Tuning Machines Set for Stratocaster & Telecaster Brushed Chrome – Replace, Repair and Restore—Genuine Fender Parts. Set of six locking tuners designed to fit most modern-style Fender electric guitars with dual-pin mounting configuration. Tall post tuners are used for the wound strings and shorter post tuners are used for the plain strings. Staggered tuners increase the break angle over the nut and improve tuning stability.