Five Finger Force Instrument Piano Guzheng Guitar Strength Span Adjustable Finger Strength Trainer Children's Grip Exercise

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Color classification:

Blue piano (piano fingering flexibility and span)
Pink piano (piano fingering flexibility and span)
(Black Ash) 3-8 pounds force adjustable span adjustable finger force (send two clips)
(Black Orange) 3-8 pounds Force Adjustable Span Adjustable Finger Force (Send two clips)
Gold 3.5-8.5 lbs force smart adjustment
Silver Kids 2-5 pounds of force smart adjustment
Gray 3.5-8.5 lbs force intelligent adjustment
Gray 3.5-8.5 lbs force adjustable

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Tools

Color classification:: Blue Piano (Piano Fingering Flexibility and Span) Pink Piano (Piano Fingering Flexibility and Span) (Black Gray) 3-8 Pounds Force Adjustable Span Adjustable Finger Force (Send Two Cards) (Black Orange) 3-8 Pounds Force Adjustable Span Adjustable Finger Force (Send Two Cards) Gray 3.5-8.5 Pounds Strength Smart Adjustment Gold 3.5-8.5 Pounds Force Smart Adjustment Gray 3.5-8.5 Pounds Force Adjustable Silver Kids 2-5 Pounds Force Smart Adjustment