Our dumbbells are CNC manufactured from solid Canadian steel for ultimate accuracy and precision, making them super compact and literally indestructible. Cerakote ceramic based paint is applied to increase a number of physical performance properties including abrasion/wear resistance, corrosion resistance, chemical resistance, impact strength, and hardness. The high quality of our raw materials make our dumbbells incredibly resistant and durable. They will be the last dumbbells you will ever own!