This amazing product has significantly improved our productivity in the transportation of heavy loads .The casters are well-built and can withstand heavy loads with minimal impact on the floors. The polyurethane material of the wheels ENHANCES shock absorption and noise reduction. They are also easy to install and have smooth rolling operation. However, the only downside is the price, which is higher than some other casters in the market. Nonetheless, the benefits and durability of these casters make it a worthy investment for any industrial and scientific operation..