Ideal for home use: can be used with most Olympic benches and Power/Squat Racks Made of solid steel for durability Diamond knurled hand grips provide a secure, non-slip grip Rotating sleeves help relieve pressure on the wrists and forearms Accommodates Olympic weight plates with a 2-inch center hole Shaft/Grip diameter is 30 mm Grip Length (shaft) is 52-inches between collars Loadable Sleeve Length is 15-inches, providing a lot of room to load weights Recommended Maximum Weight Capacity is 500 pounds Collars NOT included Model# OB-85C