There are several options available for commercial fitness gym dumbbell sets. Here are a few popular choices: 1. PowerBlock Commercial Pro 50 Set: This set includes a pair of adjustable dumbbells that can be adjusted from 5 to 50 pounds in 2.5-pound increments. The dumbbells are made of solid steel and have a commercial-grade construction. 2. Ironmaster Quick-Lock Adjustable Dumbbell Set: This set includes a pair of adjustable dumbbells that can be adjusted from 5 to 75 pounds in 2.5-pound increments. The dumbbells feature a quick-lock design for easy weight changes and have a heavy-duty construction. 3. Rogue Rubber Hex Dumbbell Set: This set includes a range of fixed-weight dumbbells from 5 to 100 pounds. The dumbbells have a solid cast iron core with a rubber coating for durability and a comfortable grip. 4. Body-Solid Rubber Coated Hex Dumbbell Set: This set includes a range of fixed-weight dumbbells from 5 to 100 pounds. The dumbbells have a solid cast iron core with a rubber coating to protect floors and reduce noise. 5. York Barbell Legacy Solid Round Dumbbell Set: This set includes a range of fixed-weight dumbbells from 5 to 100 pounds. The dumbbells have a solid steel construction with a durable chrome finish. These are just a few examples of commercial fitness gym dumbbell sets available on the market. It's important to consider your specific needs, budget, and the overall quality and reputation of the brand before making a purchase.