Machined from solid stainless steel bar stock, this 7/8'' top bar is designed to stay on your rack and will provide many years of reliable service. The angled slot helps keep bars stay once it has been snapped in place. The precision-machined groove helps keep the rock centered while the core is drilled out to help reduce weight and better dissipate heat. The use of only one top bar per rack is recommended. Weight 4.1 oz. (120g). Made in U.S.A.