Wulian xinya sports goods co., ltd are manufacturer to produce cast iron kettlebell, pro grade kettlebell, steel clubbell, gym hammer, dumbbell, rubber bumper plate, and so on.For our pro grade kettlebell, the surface is very smooth, the weights can be 4kgs-52kgs.For cast iron kettlebell, we can produce natural surface e-coat kettlebell, the best quality cast iron kettlebell in the world.Hope to cooperate with you as soon as possible.