The ab wheel is made of strong stainless steel, non-slip TPE and durable PP to ensure it withstands even the most intense workout sessions. This wheel with upgraded mechanical structure, it has light weight and can bear more weight, it also has anti-slip curved handle, neither too hard nor too soft and you could have a more comfortable grip gesture. This exerciser wheel roller can be applied to more tense abdominal and core exercise.The workout roller features a textured non-slip ab roller wheel that grips any floor surface firmly. With its uniquely designed slightly rounded ab roller and the width of 3.27 inches (around 8.3cm), the ab wheel takes your balance and dynamic stability to the next level, and is perfect for more advanced ab workouts for a rock-solid core.This ab roller acts as your personal fitness trainer - helping you to build stronger and bigger six pack abs, burn calories, build muscle and improve your overall endurance. Strengthens & tones abdominal, shoulders, arms and back, it’s simple and effective for core strength！Our ab work out equipment is the ideal gym equipment for home! Rollers with high-quality TPE material, using smoothly, super-quiet exercise in home.The ab roller wheel comes partially assembled, so all you need is to install the handles and you are all set! Easy and handy. It is recommended that you wet the steel pipe or smear soapy water on the steel pipe before installing the handle to ensure that you can install it more easily. Contact us any time if you have any question(s) regarding the assembly or use of the ab wheel.