About this item Great Isolation solution- They will increase air flow between components. Using them to stack your components to get airflow to the bottom amp and they lift it just over an inch. The weight bearing capability for 4 spikes is about 100 lbs (45kg). Adding a Tasteful Look- These attractive spikes are precision machined from premium aluminum alloy and then plated with a durable golden finish. With a nice cut and polish finish, they not only do a great job at further isolating but also add a tasteful look to your setup. No More Complaints from Neighbors- Put these under your bookshelf speakers to keep them from rattling downstairs. They undoubtedly help with the rattling cabinet that interferes with sound clarity. A simple fix for a very annoying problem. Perfect for Protecting the Floor- Comes with 4 non-slip aluminum alloy golden plated mats, which are perfect for protecting the floor from the speaker spikes! The design's deep and wide crater holds the cone tip securely in