Graph Tech Ratio Bass Synchronized Tuners 4-In-Line Black

Graph Tech Ratio bass tuners are the world's first machine heads with a double envelope gear design and a hardened steel gear, delivering an amazingly smooth and super - strong performance. They achieve high gear ratios. One full turn of any key causes a full - tone pitch change (more or less). From Low E to G, the gear ratios are 36:1, 30:1, 20:1, and 18:1. PLU: PRB4400B0

Using these Graph Tech Ratio bass tuners is easy. Just turn the key, and you'll notice a smooth pitch change. Each full turn of the key will give you about a full - tone pitch change. When using, make sure you turn the key gently to avoid sudden jerks. For maintenance, keep them clean. You can use a soft cloth to wipe off any dust or dirt. If they seem to be getting a bit stiff, you can use a small amount of light lubricant, but be careful not to over - lubricate. Also, store your instrument in a dry place to prevent rust on the tuners.