Features: This finger expander features manually adjustable spacing for customized finger training, with a high resiliences black base that remain flat during rigorous exercises, making it an essential guitar accessory for musicians. Crafted from resin, it supports versatile training methods like crosses hole exercises, enhancing finger strength and flexibility while ensuring long lasting performances as a hand trainer. Ideal for guitarists, string instrument players, and individuals seeking to improve finger agility and endurances for better musical performances and daily dexterity. Compact and portable, it's perfect for use during practice, rehearsals, or on the go, allowing consistent finger exercise as a convenient guitar accessory. Its small design promotes easy carrying and regular use, helping develop finger muscles and prevent strain for enhanced playing skills in various settings. Specifications: Component: Resin Color: Black Size: Approx. 6.69inch(17cm) Package Includes: 1x Adjustable Finger Gaps Dilator note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color from the item.