Waring Commercial WSBPP Heavy-Duty Big Stix Power Pack Immersion blender power pack only (whisk not included) Made of die-cast metal and plastic material Designed specifically for use with WSB25X, WSB50, WSB55, WSB60, WSB65, WSB70 and WSBPPW Big Stix immersion blender Universal power pack fits all shafts and whisk attachment User-replaceable couplings on power pack