- Increase your upper arm and core strength with the CAP Barbell Standard 14" Dumbbell Handle. Strength training can help improve your look, release stress and tension, burn fat and increase muscle mass. This dumbbell bar is ideal for most workouts, whether you're a beginner or an expert. It can be used for a variety of exercises, including strength training, cardio and stretching exercises. This dumbbell bar is crafted from a single piece of solid steel, to help ensure optimal balance between the two. It's durable enough to stand up to the most rigorous workout routine, and last for many years. This adjustable dumbbell handle allows you to interchange a wide variety of weights and focus on developing specific muscle groups. Each bar can accommodate weights of up to 100 pounds with one-inch hole plates. The handle is easy to use by themselves or with added plates for an adjustable workout.