2.5kg × 2 = 5kg,
1.25kg × 4 = 5kg,
Total = 10kg (Adjustable)
I initially bought 1.25kg × 4 = 5kg, then later bought 2.5kg × 2 = 5kg as needed. I have had great results using them. I haven't used them at all for the past year, so I think it needs a new owner now.