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Rock Weights

The 40 lb BUNDLE! (2 Dumbbells, 1 Kettlebell and Grip Tape)

The 40 lb BUNDLE! (2 Dumbbells, 1 Kettlebell and Grip Tape)

29 total reviews

Regular price $68.95
Regular price $76.85 Sale price $68.95
Sale Sold out
Shipping calculated at checkout.


Buy the entire Rock Weights set and SAVE big!! Below you will see a breakdown of what you will receive:

  • Two 40 lb Dumbbell molds
  • One 40 lb Kettlebell mold
  • Grip Tape

Buy the whole set for $67!  Everything is perfectly sized to fit in ONE BOX and you receive FREE SHIPPING!!

 *Bundle is only available while all products are in stock.  Concrete sold separately.


*Thank you for your patience as we do our best to keep up with high demand. If your order has not shipped within 2 days, it is likely because one of the products you ordered sold out. When this happens, we make sure to get more products to the warehouse ASAP to send your order.

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Additional Information

Do I need experience with Concrete?

Absolutely not. Concrete mix is as simple as Pancake mix. Simply add water, mix, and fill the mold!

Additionally, click here for in-depth tutorial to walk you through the entire process: Tutorial

Does Rebar come with the Molds?

Every 40 lb Dumbbell mold comes with a pre-cut rebar for inserting down the handle. No other mold requires Rebar.

What do I need from the Hardware Store?

The only essential product you need to pick up is Concrete Mix. Here's a link to the most popular option:

Optional helpful products

  • 5 Gallon Bucket
  • Gardening shovel or Concrete trowel
  • Gloves

Made in the USA!

All orders are manufactured in Iowa and shipped from our facility in Minnesota, USA. Orders are shipped within 24-48 hours. You can expect them at your doorstep within 5 business days.


We have a 30-day no questions asked return policy on all items. Orders can be returned within 30 days as long as they are in the same condition as when they were arrived - that means no concrete inside!

To start a return, you can contact us at Please include your order # in the email.

After notifying us via email, simply mail your package to the below address.  

Rock Weights 

2355 Louisiana Ave N, Minneapolis, MN 55427

Don't just take our word for it.... Here's hundreds of reviews from actual customers just like you!

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Built for the gritty.


We ship you an empty container sized to weigh 40, 60, or 80 pounds (80 lbs) once filled of concrete. Built with crack-resistant material, Rock Weights is your low-cost solution to finishing your HOME GYM without sacrificing quality and durability.

Please note: 40 lb molds come with Rebar (inserted down handle). 80 lb molds do NOT require Rebar due to the thickness of the handle and sidebars.


° PERFECTLY sized to weigh 40, 60, 80 LBS

° Crack-Resistant Material

° Insert Rebar down handle for extra durability. (Automatically supplied with all 40 lb molds)

Please note: 60 and 80 lb molds do NOT require a Rebar due to the thickness of the handle and sidebars.


We are here for everyone who doesn't mind getting their hands DIRTY! Now is your chance to save HUNDREDS on expensive dumbbells and HIGH shipping fees. Simply visit your local hardware store and purchase 80 lbs of concrete for less than $5! Add water, mix, and transfer into the mold. That's it!!


Insert a REBAR down the handle for EXTRA SUPPORT! (Rebar automatically supplied with all 40 lb molds). Whether you’re going beast mode in the basement, garage, or backyard, our molds protects your concrete allowing you to snatch, swing or press with no-stress!

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