LOYELEY Finger Trainer Resistance Training Band for Guitar Bass Banjo Piano Strengthening Finger Distance Adjustable Finger Speed System Hand

[Set contents] Set of 5 pieces. Size: 92mmx 17mm x 3mm. Color: Black. [High-quality materials] Made of soft and malleable ABS plastic, you won't have to worry about damaging your hands even after using it for a long time. 【Finger Expansion】Effectively solves the problem of finger softness and weakness, hand collapse, and lack of finger span. [Free adjustment]: You can freely adjust the exercise interval of the finger expansion sleeve, and it can be adjusted according to each person's finger condition. 【Widely Applicable】Perfect for finger speed training for bass, guitar, piano, banjo, all string instruments, brass instruments, and woodwind instruments.