The Auto-Start Power Gyro Ball, manufactured by Xerceo, is a versatile tool for wrist and forearm training. Made with a combination of metal and plastic, this black ball weighs 3 pounds and is designed to help users build strength and improve their grip and control. Its innovative design allows for easy and convenient use, making it a great addition to any fitness routine for those looking to enhance their upper body strength. Does not have strap. Only the gyro ball is being sold.