Brass Rock Slide Guitar Slides Large Brass The Original Rock Slide is the best guitar slide. In 1999, The Rock Slide invented the first ergonomic slide preferred by professional acoustic and electric players ever since. The signature is its tapered interior design that fits like a glove. Other features include the knuckle cut-out for finger flexibility and the tilted finger rest for perfect control and vibration. Polished brass offers the smoothness of chrome with the thick brass tone. Small Rock Slides are the sports car of the slide world, very light and extremely fast. Ideal for the guitarist who needs to play chords but also wants to throw small slide chops in them. It also works well on the ring finger of many women. Medium Rock Slides are a perfect weight for most styles, heavy enough for long sustain on acoustic guitars, but light enough to easily control for fast electric play. Large rock slides are among the heaviest in the scene. This ensures killer sustain on the thickest string strengths and a right facing dark sound.