Northdeer Dumbbells Series & Accessories. Northdeer dumbbells V1.0 are available in 6 sizes. Each 2.5kg dumbbell can be adjusted to 1kg, 1.5kg, 2kg, 2.5kg. Each 5kg dumbbell can be adjusted to 2kg, 2.5kg, 3.5kg, 4kg, 5kg.
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