This straight dumbbell bar is great for home or personal training centers, and they are durable and safe.The straight bar is 5' 5" long and can be used in combination with other dumbbell sets. The set contains 8 different weight groups measuring 4 x 22 lb, 2 x 11 lb and 2 x 4.4 lb.The star shaped screw collars ensure the weights stay in place. The bar grip handles have a special structure for optimal grip during exercise. The weights are covered with a noise reducing plastic cover.Total weight: 132 lb Number of plates: 8 Plastic covering: yesBar length: 5' 5"Bar weight: 13.2 lb3 section bar: 1pc hollow bar 1' 8" + 2pcs solid bar 2'Bar diameter: 1"Grip handles: yes Screw collars: yes 4 x 22 lb barbell plates: Φ1' x 2.2"2 x 11 lb barbell plates: Φ9.8" x 1.6"2 x 4.4 lb barbell plates: Φ8.1" x 1.4"