It's time for
DIY Concrete Dumbbell and Kettlebell MOLDS
Stop spending hundreds on expensive weights and high shipping fees. Rock Weights is your affordable and long-term solution!
How it works
The process is simple! We ship you an empty container perfectly sized to weigh a exact amount once filled with CONCRETE.
All you have to do is visit your local hardware store and grab some concrete! 80 lbs of concrete for as low as $4!
Fill the container, let it dry and you will have a FULLY functional dumbbell or kettlebell!
*Patent Pending

Our Mission
Make DUMBBELLS and KETTLEBELLS affordable and accessible for ALL!
More SIZES available!!
The wait is over! Get your hands on the brand new mold 80 lb mold! (Pre-Order now available). First batch of products sold out before even arriving at the warehouse. Next batch is scheduled to arrive within the next month!
Please note: If you are reading this text, your order WILL be included in the next batch of products.

Now with FREE SHIPPING!
We created this business for YOU! We know that you do NOT want to spend money on expensive shipping fees! For that reason, we now offer FREE SHIPPING on all orders over $40!

Save BIG with Rock Weights!!
Order Today!"Working with CONCRETE is as easy as PANCAKE MIX!! Just add WATER!"

Easy to follow video tutorial
Concrete is both affordable and EASY to use!! You can purchase 80 lbs of concrete mix for as low as $4! Simply pour into a bucket and add water! Click the link below to watch a tutorial walking you through the entire process of finishing your dumbbell and kettlebells!
