ขาย ☞ ✔H*Y✔ Guitar Trainer Tool for Beginner Finger Expansion Fingers Power Trainer For Piano Learner Sa ราคาที่ดีที่สุด

Guitar Trainer Tool for Beginner Finger Expansion Fingers Power Trainer For Piano Learner Saxophone Learners Ukulele Beginners The fact that the fingers can't be crossed often limits the improvement of the performance level, and insisting on training to improve the basic skills is the king. This span trainer is continually improved to help the player solve the problem of the fingers being unable to open and increase the flexibility. It can be carried around when you are free to play the piano/guitar. Features: High toughness, elasticity, smooth surface, easy to clean, and constant. The spreader is used without a piano/guitar, so it is easy to carry around. Improve finger span and flexibility, improve finger function and improve playing efficiency. The use process does not affect other activities of the finger. Specifications: Main color: blue Main material: ABS Length: 145mm, 139mm (optional) Spacing: 145mm: 22mm, 23mm, 19mm 139mm: 20mm, 21mm, 18mm Middle finger and ring finger hole inner diameter: 145mm: 21mm 139mm: 20.5mm Index finger hole inner diameter: 145mm: 19.5mm 139mm: 17.5mm Little finger hole inner diameter: 145mm: 17.5mm 139mm: 17mm Package size: 145mm: 147 * 30 * 20mm / 5.8 * 1.2 * 0.8in 139mm: 139 * 30 * 20mm / 5.5 * 1.2 * 0.8in Package weight: 145mm: 12g / 0.4ounce 139mm: 10g / 0.4ounce Package List: 1 * Finger Expansion Tool