Glide smoothly on multiple surfaces with this set of 5 sporty polyurethane rollerblade replacement casters whether you work from home or go into the office. The skate wheel design of these casters, with ball-bearing glides, makes moving your chair easier and quieter. These racing style casters have a non-marring polyurethane layer that won’t scratch, dent or leave any marks on wood, laminate, or ceramic flooring and negates the need for a floor protector mat. While great looks are a definite plus in anyone’s book, these skate wheels have more than cool looks. These rollerblade casters won’t clog with debris as quickly regular dual wheel casters so they require much less maintenance and will generally last longer than regular caster wheels. The slim silhouette reduces wear and tear on carpet and hard flooring surfaces and will hold a static weight capacity of up to 550 Lbs. but please adhere to your chair’s weight capacity restrictions. Replace your worn out wheels quickly and easily with no tools required. Simply pull out your old casters and pop in the new ones to breathe new life into your favorite chair.