Welcome to our forum.
http://www.homedepot.com/p/Smart-Spa-The-Cover-Roller-Hot-Tub-Cover-Lifter-COVERROLLER/204168437?cm_mmc=shopping-_-googleads-_-pla-_-204168437&ci_sku=204168437&ci_gpa=pla&ci_src=17588969these are the ones im talking about....