The Dunlop Glass Slide will take your sumptuous playing to new heights, delivering a smooth, warm tone as you glide across the strings. Prepare for sensational sonic goodness and sparkling clarity. It comes as no surprise that this slide is hugely popular and favoured by musicians everywhere - is crafted from Pyrex glass which not only produces a wondrously thick tone, but also provides incredible durability. Better still, the glass has been heat treated and annealed, resulting in a premium-quality construction that can handle years of use.