Many experts would quickly say “NO.” Specialty products could be anything from gimmicky “as seen on TV” products to high-quality attachments that have one specific purpose. The experts have seen too many people - themselves included - purchase these items on impulse. Almost all the buyers never get their money’s worth out of their purchase. Unless they somehow fit into your regular workout regime, specialty items belong in fitness clubs, where multiple members will find occasional use for them. In your home, they become glorified ornaments. You’ll get more exercise moving them out of your way than using them.