I use this product for p90x and they work great. They are a little long but don't take long to get used to. If you are short on room they are perfect as you always put them back in the cradle and not left laying around.
My gf and i live in a condo so we bought the bench,mat,552's, and stand and a pullup bar. We get a great workout with tough and convienant equipment that doesn't make our condo look messy. I origanlly bought spinlock dumbells with plate but they mark the floor and take longer to use these are just so solid and easy to use.
Pros: Compact, Durable, Easy To Use, Multifunctional, Targets Muscles
I bought this along with the 4.1 bench and stand and I'm very happy. With all 3, I can do all my upper body exercises at home. The quality is very good and product seems to be durable.
At age 62 I started a long term weigh loss regime which I complemented with long brisk walks from 1 to 3 hours and exercise. The one thing I was missing was a weight training program that would promote good general muscle tone to go along with the other measures. My goal was to get to my proper weight and be in the best physical condition possible for general fitness and well being before the age of 65. I'll be 63 in two weeks and expect to be at my target well before 65. I use the dumbbells 3 to 4 times a week along with stretching, sit-ups and brisk walks. I'm not able to run anymore because of repeated shin splints so the long fast walks also 3 to 4 times and week have provided better than expected results. The quick weight change by just dialing the required weight has also encouraged others to use the weights very frequently. This was one of the best purchases I have made.
Pros: Compact, Durable, Easy To Use, Multifunctional, Space Saving, Time Saving
I bought this mainly for my wife. She enjoys that she can change the selection of weight easily without having a large selection. Easy to adjust, easily cleaned, great product.
Pros: Durable, Easy To Use, Multifunctional, Targets Muscles