Paloma Stone Slides Bottleneck Style Guitar Slide, 20mm x 69mm (Cobalt Blue) The only high-fire stoneware guitar slides and bars in the world. Handcrafted to exacting standards, light weight facilitates ease of movement Ultra-hard, proprietary, silky-smooth glaze surface yields minimal string noise and will never scratch or wear Extremely dense clay body delivers excellent sustain with clear, warm, organic tone Designed by players for players "Get your tone with stone"