High-quality rubber hex dumbbells available in 1 to 10kg, 2.5 to 25kg or 12.5 to 40kg sets. The 1 to 10kg goes up in 1kg increments (a set of 10 pairs). The 2.5 to 25kg set goes up in 2.5kg increments (a set of 10 pairs). The 12.5 to 40kg