Features: Included: 10 pcs picks + 1 pc metal slides+ 1 pc glass slide + 1 pc plastic box. Are you still bothering the string resonance? our guitar slides can help you, smooth surface and clean edge prevent from hunting your fingers. Guitar slides and picks are useful and comfortable to wear, alleviate finger ache while long-time practice. Excellent tone: play instruments with guitar slides can produce a clear and lasting sound, richer and brighter high sound quality. Guitar Slides Color: There are 2 colors of guitar slider: clear glass and silver; The color of picks is black, yellow, pink, blue and green. Clear Glass Slide: The clear slide is made of seamless glass, which slip smoothly on the strings, with much softer, subtler and harmonics sounds. Steel Guitar Slide: The steel guitar slide is made of durable 304 stainless steel with good quality. It can offer superior sustain, excellent intonation, and a clear bright sound. Package Includes: 10 x Picks 1 x Me-tal Slide 1 x Glass Slide 1 x Plastic box Specifications: Material: Glass+Stainless Steel Color: Transparent/Silver Length: approx.60 mm/2.36 in Wall Thickness: approx.2 mm/0.07 in Inside Diameter: approx.22 mm/0.87 in Outside Diameter: approx.25 mm/0.98in note: Please allow 0-3mm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!