Pairs of dumbbell with weight of 10,12.5,15,17.5,20,22.5 & 25kg Dumbbells are to be Solid cast steel or iron encased in rubber or Urethane Dumbbell handles are to be all steel or chrome steel contoured (ergo) handles Dumbbell Weight clearly marked on Dumbbell Tier Rack is to fit all dumbbells with all 4 sides deburred inside and out for user safety