With every Satisfyer product ships a removable silicone tip. This is removable to allow you to easily clean them for each use. However, with use comes the need for a replacement (or possibly a need to replace lost tips).
This is a pack of 5 tips specifically for the Satisfyer Pro 2. The box comes with 3 Standard Climax Tips which are the style of the tip that came with the product, as well as 2 Desire Enhancer tips which are broader and rounded for a new sensation.