If you don't need to use several dumbbells of varying weights in your workouts, one or two pair of basic cast-iron dumbbells may be best for you. Numerous manufacturers make such dumbbells, but the Cap Barbell Cast-Iron Dumbbells get the most positive user feedback. Reviewers say these weights, which start at 5 pounds and go up to 50 pounds, are strong, sturdy and easy to use. They're easy to grip -- even with sweaty hands -- and the hexagon shape keeps them where you put them. However, reports say the paint chips easily, and some reviewers are annoyed that the dumbbells are sold individually and not as a pair. If you need more than a few pairs of dumbbells, consider adjustable dumbbells like the Bowflex SelectTech (*Est. $400 and up). These dumbbells are compact and can replace an entire set of cast-iron dumbbells, but they are expensive.
User reviews are the best source of information on Cap Barbell Cast-Iron Dumbbells. Amazon.com and Walmart.com both have a good selection of user ratings, although the reviews tend to be longer and more detailed at Amazon.com.
More than 40 owners have commented on the Cap Barbell Cast-Iron Dumbbells at Amazon.com, giving the dumbbells a 4.5-star rating (out of 5). Users say the dumbbells are solid and durable, but some say the paint chips easily.
Review: Cap Barbell Solid Hex Single Dumbbell, Contributors to Amazon.com
The Cap Barbell Cast-Iron Dumbbells have near-perfect ratings at Walmart.com after approximately 100 reviews. More than 90 percent say they would recommend the dumbbells to a friend. However, some users wish they were sold as a pair.
Review: Cap Barbell Cast Iron Dumbbell, Contributors to Walmart.com