Notice: The threads are identical, allowing you to select different weight plates; for instance, you can attach 3lb plates to 10lb dumbbells. However, please be aware that the sizes of the plates vary.
Package Includes: 4×weight plates + 4×rubber ringe (If you choose the plates with a different diameter from your original dumbbells, the rubber rings provided will be useless.)
Recommended Match: 4x0.5lb plates for 5lb dumbbells, 4×1.5lb plates for 10lb dumbbells, 4×2.5lb plates for 15lb dumbbells, 4×3lb plates for 20lb dumbbells, 4×5lb plates for 30lb dumbbells, 4x7.5lb plates for 50lb dumbbells.