Description: 【For Forearm and Grip Strengthening】: The Dumbbell Handle is designed for pronation and supination exercises, isolating often neglected muscles in the forearm. This challenging design is ideal for building comprehensive wrist stability, grip strength, and the functional strength necessary for martial arts, rock climbing, and racket sports 【Non Slip Grip】: The Dumbbell Bar Handle features a sturdy 4.5cm/1.77 inch diameter nylon handle with a textured surface for a secure, non slip grip. This ensures you maintain complete control during your workout, allowing you to focus on form and muscle engagement without worrying about the handle slipping, even during intense, high repetition sets 【Universal Weight Plate Compatibility】: The Forearm Wrist Exerciser features a standard threaded rod design and is compatible with most standard weight plates with a 1 inch center hole. No need to purchase weights; simply load your existing plates, secure them, and you're ready to enhance your training routine 【Simple and Sturdy Construction】: The Forearm Strengthener is designed for simple and effective training. The system includes two large stainless steel washers and two secure, easy to use reverse locking knobs. This creates a simple yet highly reliable locking mechanism that keeps your weight securely in place while allowing for quick and easy adjustments between sets 【Versatile Tool】: Forearm Training is designed to build muscle endurance and definition through controlled, high repetition movements. The goal is to master the movements with perfect form and focus on the number of repetitions, not just the weight lifted Specification: Material:nylon Size Chart: Grip diameter:4.5cm/1.77inch Package Includes: 1 Forearm Training Handle