(48mm)Embedded skate style wheel will roll over a variety of flooring with ease , Make your office fun It can roll smoothly and do not make any unpleasant noise. It will not leave any traces over the floor, not hooked the carpet or scratching the floor that let your expensive floor be effectively protected And create a quiet office environment The proper installation height makes your office chair perfect with the table height Perfect coordination sitting on the office chair is very comfortable. Soft polyurethane shock absorption effect and heavy duty design of wheel iron fork make the products more durable.