Rubber Hand Finger Span Exerciser for Piano

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Description:

Musical Instrument Piano Guitar Hand Finger Exerciser Strengthener Trainer.
Made of acrylic and rubber, will not hurt your fingers.
Visible physical force adjustment, you can see the change while practice.
Exercise finger strength and speed, improve finger flexibility.
Widely used for play guitar, piano, guzheng, ukulele etc musical instrument.

Size Chart:

Large: Approx. 172 x 44mm/6.77 x 1.73inch
Maximum : Approx.25mm/0.98inch
Minimum : Approx.20mm/0.79inch
Medium: Approx. 158 x 44mm/6.22 x 1.73inch
Maximum : Approx.20mm/0.79inch
Minimum : Approx.17mm/0.67inch
Small: Approx. 140 x 37mm/5.51 x 1.46inch
Maximum : Approx.19mm/0.75inch
Minimum : Approx.17mm/0.67inch

Package Includes:

1 Piece Finger Exerciser

Hand Finger Exerciser;Guitar Finger Exerciser;Finger Strengthener Trainer;Hand Finger Span Exerciser;Piano Guitar Violin Parts Accessory