The york commercial rubber hex dumbbells 2 x 125kg are ideal for building strength and muscle toning they feature very durable knurled chrome handles that are ergonomically contoured for a perfect fit as well as rubber covered heads ensuring both comfort and safety the heads are permanently affixed to a thick 35mm firm steel shaft to improve the strength of the headhandle joint the set contains two 125kg 275lbs dumbbells that are designed for light commercial usage only