The wand allows for extended reach cleaning. Fits various Sanitaire models including 3684, 3686, 6820, 970, 972, 996, C4571, HD3684, HD4570, S3681, S3686, S4170, S4180, SC3683, SC3687, SC4570, SC4580. Replaces items 28317, 39514, 39514A, 60424, 60424-1, 61559, 61559-1