Marcy ECO Iron 40 lb. Adjustable Dumbbell Set with a Carrying Case ADS-42 STURDY CONSTRUCTION  The ADS-42 boasts a high-quality construction that is reinforced with Vinyl bumper for efficient weightlifting and bodybuilding. Its hammer tone surface resists corrosion and prevents materials from sticking to the weight plates KNURLED BAR FOR IMPROVED GRIP  This workout weight set features a knurled hand grip thats designed to enhance your hold during lifting. The textured bar facilitates precise contact of your hand on the bar for a superior grasp SPIN LOCK COLLARS  Forget about moving and unstable plates when training! This dumbbell weight set comes with two spin locks that attach firmly to the end of the bar to secure the weights and prevent them from shifting when you perform exercises VARIOUS WEIGHT PLATES  Customize your training with this gym gear that includes four 5lb plates and four 3lb plates. The cast-iron weights are ideal for first-time users to fitness buffs who are looking for convenient and reliable exercise equipment STURDY CARRYING CASE  Organizing your home gym equipment after working out is a breeze with this exercise weight set. It comes with a carrying case and its smart design provides enough room for your gear, allowing convenient transport