Junk....dont waste your money. Just a gimmick. Only guys that use them get them for free. My partner at the Grenada crappie masters tournament was using them and i outfished him well over 20 to 1. We single poled cypress and i just used regular lead heads made and painted by joey wall. Won the youth adult without em in pure mud for water. Ive tried rattles before and felt like i got less bites.