This item is provided by Crutchfield.com and includes free phone technical support for the life of the product. Details on how to take advantage of this service will be included with your package. Should you have any issues locating information on how to contact Crutchfield Technical Support, please contact this website's Customer Service department. Heavy-duty speaker stands Pangea's all-steel DS400 speaker stands are designed to provide rock-solid support for a wide variety of bookshelf speakers. They range in height from 20" to 32", so you can place your speakers at the best height for your listening environment. Spikes are included for extra stability on carpet, and soft top pads help isolate the speaker from unwanted vibrations. All four rectangular pillars in each stand are hollow, so you can add sand or shot for ballast. What's in the Box: 1. 2 Top plates 2. 2 Bases 3. 8 Upright posts 4. 8 Spike feet (hex-nuts attached) 5. 8 Rubber pads 6. Eight M6x18mm screws 7. Sixteen M8x25mm screws 8. Hex-key 9. 2 "Pangea" logo badges 10. Assembly Instructions