Grip resistance ：Adjustable 10 – 40kg Product measurement：150*100*20mm Product weight: 90g Ready stock Singapore! This hand exerciser is perfect for fitness, sports and musical instrument enthusiasts. Best for grip training for sports like tennis, badminton, baseball, etc Suitable hand exerciser for therapeutic treatment of rheumatoid arthritis, arthritis, carpal tunnel, tendonitis, tennis elbow and hand injuries.