A plastic guitar slide is a tool used to create a sliding effect on the guitar strings, producing a smooth, gliding sound. It is made of plastic, which makes it lightweight and easy to handle. Plastic slides are often favored by beginners due to their affordability and durability. They are available in various sizes to fit different fingers and can be used on both acoustic and electric guitars.

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.