Cast Iron Standard Weight Including 5FT Standard Barbell with Star Locks 100-Pound Set Multiple Packages 100 pounds set: 1x 5 feet Standard Barbell with Star Locks (10 lbs) 4x 2.5lb 2x 5lb 2x 10lb 2x 25lb cast iron plates. Bar features multiple knurling positions for your convenience and safety 300-Pound capacity. Plates are made of solid cast iron with a 1-inch center hole fits any Standard bar with diameter 1” or less; Can be used with 1” dumbbell bars too. All plates feature a durable black baked enamel finish to prevent the plates from rust and corrosion without any unpleasant odor. The weight set allows you to do a wide range of exercises from squats to bench presses.