Finger Strengthener,OIBTECH 4 Tension Adjustable Hand Grip Exerciser Ergonomic Silicone Trainer for Guitar,Piano,Trigger Finger Training, Arthritis Therapy and Grip, Rock climbing (AHF-03)<br><br> Manufacturer: AROMA <br> Product name: Hand exerciser <br> Color: Black <br> Tension range: 4LB-7LB <br> Dimension: 87mm*68mm*23mm <br> Weight: 74g<br><br> <b>GUARANTEED:OIBTECH 2 year warranty and friend customer service.</b><br>