Our advanced Materials Your Floor. This office chair caster replacement set is with finest polyurethane. Unlike low quality casters, these wheels do not your flooring. The rollerblade style that polyurethane does not leave behind black marks as your chair glides across the room. The use of precision ball bearings that caster wheels roll amazingly on tile, carpet, vinyl and other difficult floor. The product is backed by heavy-duty guarantee and its maximal load is 650 per office chair. Unlike most products, which offer the same wheel design with the old-industrial metal bracket, we up with a new stylish concept of bracket and wheels. The support nylon bracket and internal parts that come with these caster wheels are extremely and lasting. The vertical axle is with 2 steel ball bearings which makes the swivel action much smoother and the axle much stronger compared to other designs in the market. Feather-Light Gliding & Take Your Comfort To The adjacent Level ! . Our rollerblade style caster wheels a soft and slightly rubberlike surface that, unlike the usual integrative office chair and furniture wheels, does not cause any damage to sensitive flooring, like hardwood or expensive rugs. Toss That old , Clunky integrative Floor & Glide Freely Around the Office. Why Your Office Space to 36 '' x 48 '' of Mobility ? . Those Outdated integrative Floor Mats. integrative office chair mats have actually been to cause more harm than good in many cases. The claimed `` anti-slip '' mats can beneath the chair, causing extra wear to surfaces and even remove layers of surface finish. Our rollerblade style wheels completely the need for chair mats and dramatically increased the mobility of your office chair. So, The adjacent Step And Order Your Set Now ! .