I was far from being physically active and began to rust a sagging arm skin, wrinkled skin on the upper arms bottom, so I thought you have to do something about. After I started with dumbbells (15 kg each) I had to do something for my fingers and forearm muscles. So I ordered this Handgrip (after a long search and compare) 200 according to the first attempts I believed my fingers fall off, this dumbbell lives of Power God. I started slowly as long until my fingers and forearms ached, took a break for 2 days and gone on, slowly rebuilt the my muscles continously on, Today, after about 5 weeks I'm doing every day 10 units with 10 repetitions a 7sec. that's enough to keep completely out of my muscles in the retirement age up to scratch. I can each something for his muscles (arms, fingers) growth must and will recommend this Handgrip warmly. Ps I wanted to order me a stronger but refrained from and have the pressure Inter Walle extended until such time as I can no longer hold together the handles and they go up alone, that's enough and resembles a stronger weight of certain ego wants more I let just one or two fingers spread apart that goes excellent. This dumbbell is a buy recommendation, price and quality are 1.te class.