They're extremely clever - couple of seconds to go from a 2kg dumbbell to a 36kg dumbbell. They're not small, for a 2kg, but that's the price of the cleverness.
@Dammit started
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They're extremely clever - couple of seconds to go from a 2kg dumbbell to a 36kg dumbbell. They're not small, for a 2kg, but that's the price of the cleverness.