The guitar exerciser is made of material and with fine workmanship, durable in use. It is an addicting instrument that can be taken everywhere, mini size, portable for daily carry. It is great for improving your finger dexterity and speeding up the progress of guitar playing. Features - Color: Black. - Material: ABS. - Size: 25.00X5.00X3.00cm/9.82X1.97X1.18in - Made of materials, durable and sturdy. - Great tool for training and improving your guitar skills. - Great tool for training your hands and speeding up guitar skills. - Its ergonomic design, compact size and lightweight makes it easy to carry and available for you to practice. - It can only for practice. Improving your finger dexterity and speeding up the progress of guitar playing. - Guitar practice tool for beginners. Warm Tip: Dear buyer, due to lighting effect, monitor's brightness, manual measurement and etc, there could be some slight differences in the color and size between the photoes and the actual item. Sincerely hope that you can understand! Thank you! Package list: 3 x Portable Guitar Exerciser