These safe, attractive dumbbells have contoured, knurled chrome handles and durable rubber-covered heads for increased safety and comfort. The heads are torque-threaded and permanently affixed to a thick 35 mm solid steel shaft improving the strength of the head/handle joint. The knurled chrome handles are ergonomically contoured to fit comfortably in the users’ palm. Smaller handles graduate up from 25MM to 35MM grip for increments 20LB to 125LB. The rubber coating increases durability, protects flooring and equipment, enhances appearance, diminishes noise and is easy to clean. York Barbell rubber hex dumbbells carry a one year warranty covering defects in structural integrity..