YangHaoDiSY Metal Hand Grip Strengthener, No Slip Heavy-Duty Finger, Wrist & Forearm Exercise Strengthener for Home Office & Gym (Blue/300LBS)

It is made of top, aluminum knurled handles and high quality springs for durability. Specifications: 100 lbs 150 lbs 200 lbs 250 lbs 300 lbs 350 lbs. Portable, easy to use, you can carry these hand exercisers with you to exercise. Enhance hand grip For arms, arm strengthening, fingers and wrist arms, it provides a perfect way to enhance hand strength and improve grip.High quality carbon steel and aluminum handle. Use them at home, in the office, or when traveling to turn your downtime into an efficient exercise session.