The Origin Urethane Kettlebells are built to the highest quality. Urethane is highly durable and has the added bonus of not marking floors or equipment. The sleek dark grey design evokes quality and will fit into any gym environment effortlessly. Our most durable kettlebell Will not mark other equipment or floors Weights from 4kg - 32kg Increasing in increments by 2kg from 8-20kg and 4kg from 20-34kg, each kettlebell offers a uniform size regardless of the weight. This concept meets regulations - as well as allowing easier transition as the user increases/decreases weight. SPECIFICATION: Brand Origin Usage Home Use, Commercial Use Condition Brand New Warranty 1 year warranty