1、POWERFUL FUNCTION: Enhance your exercise bike experience with this durable ball knob. It provides a firm grip and easy release for a comfortable workout. 2、CONVENIENT AND VERSATILE: This knob can be used on various fitness equipment such as strength equipment, weight benches, and more. Enjoy a wide range of exercises with ease. 3、SPRING HANDLE: The knob features a built in spring handle, making it effortless to release and not scratch your hand due to entanglement. Stay focused on your workout without any hassle. 4、STURDY MATERIALS: Crafted with iron and plastic, this knob is designed to withstand regular use. It ensures durability and long lasting performance for your exercise equipment. 5、UNIVERSAL SIZE: With a size of approximately 16mm, this ball knob fits most exercise bikes. Upgrade your equipment effortlessly and enjoy a more comfortable and secure workout. Item Type: Fitness Equipment Ball Knob Material: Iron + Plastic 5 x Fitness Equipment Ball Knobs