The Ninja Hand Grip in Red, identified as model N6317, is a fitness accessory designed to strengthen and condition the muscles in the hands and forearms. Hand grips like these are commonly used to improve grip strength, making them beneficial for various activities such as weightlifting, rock climbing, and sports that require a strong and secure grip. The red color adds a vibrant and energetic aesthetic to the hand grip. Designed by the brand Ninja, known for fitness equipment, this hand grip provides users with a compact and effective tool for targeted hand and forearm workouts.