Material Composition | Heavy-duty gym setups, commercial gyms | Rubber Coating (Shore A 90 Hardness, ISO 37) ▲▲▲ Steel Core (Yield Strength ≥ 450 MPa, ASTM A36) | ▲▲▲ Industry Standard: Basic rubber coating (Shore A 70) Our Base: Durable rubber + steel core Our Advanced: Premium rubber + alloy steel | Higher upfront cost vs bare-metal dumbbells |
Weight Range | Beginner to elite training | Customizable 2.5kg–50kg increments ▲▲▲ (ISO 7200 certified weight tolerance ±1%) | ▲▲▲ Industry Standard: Fixed 2.5kg increments up to 30kg Our Base: 5kg–50kg in 5kg steps Our Advanced: 2.5kg–50kg in 2.5kg steps | Advanced tier requires more storage space for full range |
Anti-Slip Grip | Wet/greasy environments, CrossFit | ASTM F1677 certified (slip resistance ≥0.5) Knurled texture depth ≥0.8mm (ISO 25178) | ▲▲ Industry Standard: Uncoated handles (slip risk in sweat) Our Base: Smooth rubber grip Our Advanced: Textured anti-slip rubber | Slight weight increase (≈10%) vs bare-metal dumbbells |
Noise Reduction | Home gyms, shared facilities | 43 dBA (quieter than refrigerator hum) ISO 10140 noise compliance ▲▲▲ | ▲▲▲ Industry Standard: 58 dBA (bare-metal clatter) Our Base: 48 dBA Our Advanced: 43 dBA with hexagonal rubber feet | Premium coating adds 15% to material costs |
Customization | Specialty training programs | Custom weights (e.g., 3kg, 7.5kg) ▲ Engraved labels (ISO 15442 readability) | ▲ Industry Standard: No customization Our Base: Pre-set weights only Our Advanced: Custom + engraved labels | Custom orders may delay delivery by 3–5 days |
Rack Compatibility | Commercial gym setups | Universal fit for 90% racks (ISO 9001 compliance) ▲▲ Hexagonal shape (50mm diameter) | ▲▲ Industry Standard: Round heads (roll risk) Our Base: Standard hex dumbbells Our Advanced: Rack-included set with magnetic locks | Advanced rack adds 20% to total system cost |