High End OEM Dali Speakers Compact Premium Spike Two Set (for 2 speakers) p/n 840098-0-0. As You can see in pictures one set is missing 1 small part. Description The compact Premium Spike Set from DALI anchors your speakers to the floor and improves bass reproduction by reducing vibrations from the enclosure spreading to the room/building. The spike set fits the following speaker models: CALLISTO 6 C RUBICON 5 + 6 + 8 RUBICON 6 C + 8 C OPTICON 5 + 6 + 8 MK1 OPTICON 5 + 6 + 8 MK2 IKON 5 + 6 + 7 MK1 IKON 5 + 6 + 7 MK2 The compact Premium Spike Set provides several audio benefits. It tightens the bass (without the floor singing along), which emphasizes details in the midrange and lets the treble stand out! Using spikes is one of the cheapest and most effective upgrades you can make in a stereo system. The base of the spike set is made of aluminium and treated with a soft-touch, mat black silk coating. Get this spike set, and your neighbours will love you! Will be shipped by Air Mail International priority mail. Thanks for looking I will ship to Worldwide. Please contact me for shipping rates to Your country that is not listed in shipping location section and I will send You a shipping price.