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AmStaff Fitness Urethane Dumbbells, a perfect blend of robust steel construction and cutting-edge urethane technology. Whether you're equipping a commercial gym or home workout space, CPU Urethane Dumbbells are built to withstand high volume usage. The steel handle and weight head are precision machined and welded together for maximum durability. AmStaff Fitness CPU urethane coating doesn't just withstand the rigors of daily use—it practically defies wear and tear, while also neutralizing any unpleasant odors.
The meticulously crafted knurled handle serves as an added layer of assurance, providing a secure, non-slip grip for every exercise—from isolated curls to complex compound movements. Our dumbbells are designed with versatility in mind, ensuring they adapt as your workout regimen evolves. Choose from a comprehensive range of weights, starting as low as 5lbs and extending all the way to 130lbs, all in precise 5lb increments. This granularity allows you to progressively challenge yourself without being limited by large weight jumps
Each set is sold in pairs in 5lb increments
*Dumbbell rack(s) not included.
- Urethane (CPU) Dumbbells Set 5 - 50lb
- Urethane (CPU) Dumbbells Set 55 - 75lb
- Urethane (CPU) Dumbbells Set 80 - 100lb
- Urethane (CPU) Dumbbells Set 105 - 130lb
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AmStaff Fitness Urethane (CPU) Dumbbell Sets
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FAQs
Please read our FAQs page to find out more.
Are Mynixa caps true to size?
Yes! Our caps are designed with a standard streetwear fit in mind. Most styles feature adjustable straps or flexible materials to ensure a comfortable, secure fit for all head sizes. Check the product description for specific sizing details.
What materials are used in Mynixa products?
We prioritize quality and durability. Our caps and apparel are made from premium fabrics, reinforced stitching, and high-quality components to ensure long-lasting comfort and style that holds up to daily wear.
How long does it take to receive my order?
Orders are typically processed within 1–2 business days, and delivery across the U.S. takes approximately 2–4 business days. You’ll receive a tracking number via email as soon as your order ships.
Can I return or exchange an item?
Absolutely! We accept returns and exchanges within 30 days of delivery. All returns are free, there are no restocking fees, and every item is eligible — as long as it’s unworn and in its original condition with tags attached.
How can I contact Mynixa if I need help?
We’re here to help! You can reach us via:
- Email: mynixashop@gmail.com
- Phone: +1 (936) 202-3553
Our support team is available Monday to Friday, 9:00 AM – 6:00 PM CST and typically responds within 24 hours.



