This Shock Absorb Caster “Torsion spring type" reduces shock, vibration and noise during running. Coming with complicated structure, existing spring loaded casters have disadvantages such as high production costs and heavy own weight. The simplest design of this caster that shock absorbing spring is integrated with the main frame, overcomes these shortcomings, and helps to minimize the environmental impact by reducing process of manufacturing and material waste. With solutions for specific technical problems in a succinct manner, the caster is simply and beautifully-crafted. This product won the Good Design Award 2010 in Japan.