The Allparts TK - 7935 - 010 Chrome Grover 502 Series 3X3 Locking Tuners are an excellent replacement for your electric guitars. These tuners use the well - known 18:1 Rotomatics® design with a 'thumb screw' mechanism to lock the string firmly. Just insert the string through the post hole, wrap it around once, and then tighten the thumbscrew to lock. They're a perfect fit for standard machine heads and come with all the necessary mounting hardware. Features include a set of 6, Roto - Grip Locking Rotomatics®, mounting hardware, and a stylish chrome finish.

Using these tuners is easy. First, insert the string through the post hole of the tuner. Then, wrap the string around the post once. After that, use your thumb to tighten the thumbscrew to lock the string in place. When installing, make sure to use the included mounting hardware and follow the standard installation steps for your guitar. As for maintenance, keep the tuners clean. You can use a soft cloth to wipe off any dust or dirt. Avoid using harsh chemicals as they may damage the chrome finish. Also, if you notice any looseness or strange noises, check the mounting and the locking mechanism to ensure everything is in good working order.