Slip, slide, and wail on your guitar with the Dunlop 204 Medium Knuckle Glass Slide. Made from high-grade boron silicate, this tempered glass slide gives you warm and thick tones that accentuate the middle harmonics of your sound. The 204 is a shorter knuckle-sized slide that only covers part of your finger, leaving the your fingertip exposed so you can still fret notes. Perfect for acoustic and electric guitar, the Dunlop 204 Medium Knuckle Glass Slide will let you live out your blues dreams.