A metal guitar finger slide is a small, cylindrical tool made of metal that fits over a guitarist's finger, typically the ring finger or the little finger. It is used to slide along the strings of the guitar, creating smooth, sliding notes and vibrant, expressive sounds. Metal slides are known for their bright and clear tone, which can add a distinct edge to the music.

This technique is commonly used in blues music, where it helps create the genre's characteristic emotional and soulful sound. However, metal slides are also popular in other genres such as rock, pop, and even heavy metal, where they can add a unique and powerful effect to the music. The slide technique often involves playing the guitar in open tunings, which makes it easier to produce the smooth, sliding notes that are a hallmark of slide guitar playing.