Features: brand new and high quality Hands Trainers: To learn piano, practice hands first. So we design this five-finger training tool, for piano beginners and players to exercise hand and train finger strength and correct finger posture. Finger Anti Rollover Design: Only correct fingering can press the training keys easily. The design is to correct fingering and keep your palms in correct posture to ensure good for palm support. for Palm support is the for key to a good hand posture. Our piano Hand training can not only solve the finger correction issue, and also the for palm support issue. 1:1 Keys As Piano: Both keys width and pressing strength. The depth of for key press is the same as the piano, same for key width as piano, training hand and finger strength as playing on real piano. With this fingers training tool, maintain good fingering habit easily. Non-slip Design: High Quality ABS material. Bottom non-slip, suitable for most musical instrument players and it can also be used for finger strength exercise in daily life. More Details: length 13.8cm/5.43in, width 14.1cm/5.55cin, height 6.4cm/2.52in, compact size. Comes with 1 pair of finger training, available to practice with both hands. Specifications: Material: ABS Weight: approx.250g Color: Black/Green/Pink Size: approx.13.8x14.1x6.4cm/5.4x5.5x2.5in Package: 1Pc Package Includes: 2Pcs x Piano Finger Trainng Tool note: Please allow 1-2cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!