... holes... 3.technique:rubber covered,chrome coated 1.material:cast iron/rubber 2.surface:2 holes,3 holes,7 holes... 3 ... barbell: 1. Type: fixed or adjustable available. 2. Material: cast iron/rubber 3. Processing technique: rubber covered, chrome coated, vinyl coated ... fitness equipment, mainly product such as dumbbell, barbell, barbell plate, weight stack plate, kettle bell and other spare parts, we can ...