Feature: 1. Made of PP plastic material, light weight and durable, the rod body is wrapped with sponge, anti‑skid effect is significant, easy to grasp, can let your hand firmly hold the rod. 2. The dumbbell grip interface is suitable for extending the dumbbell bar, making dumbbell workouts easier. 3. Suitable for various warm‑up exercises and strength training, such as arm, shoulder, abs, leg or back exercises. 4. Easy for installation, only need a few steps, save your time, more convenient to use. 5. It is suitable for dumbbell bar with inner diameter of 2.6cm/1.0in. Please choose proper size before installation. Specification: Item Type: Dumbbell Connecting BarMaterial: PP Plastic+SpongeSize: Length: Approx. 40cm/ 15.7in Outer Diameter: Approx. 4.5cm/ 1.8in Inner Diameter: Approx. 2.6cm/1.0inWeight: Approx. 379g/ 13.4ozColor: Balck and Red . Package List: 1 x Dumbbell Connecting Bar