Features 1、Good quality PU surface, soft and durable, can protect your hand from injury 2、Strong spring can return to its original state quickly after hitting 3、Desktop type, suction base holds tight to any wood or metal desktop surface 4、Comes with a pump and a valve, easy to use 5、Great for anyone to use, perfect for home or office stress relief Features: Good quality PU surface, soft and durable, can protect your hand from injury. Strong spring can return to its original state quickly after hitting. Desktop type, suction base holds tight to any wood or metal desktop surface. Comes with a pump and a valve, easy to use. Great for anyone to use, perfect for home or office stress relief. Specification: Material: Stainless Steel Color: As picture shown Ball Size: 17cm / 6.7inch Total Height: Approx. 39cm / 15.35inch Weight: Approx. 619g Package List: 1 x Ball 1 x Base 1 x Pump 1 x Valve 1 x Spring Note: The chassis needs to be pressed on the adherend to assemble, and can not be assembled and then adsorbed. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement, there may be 1-2mm error in size. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. Package List 1 x Ball 1 x Base 1 x Pump 1 x Valve 1 x Spring