Genuine Ryobi upper drive tube part number 308470060. This tube connects to the engine on one end and an Expand-It accessory on the other end. Includes inner drive shaft and clamp. Fits Ryobi models RY252CS, RY253SS, RY251PH and RY254BC. Please note this is not an extension and cannot be used as an extension. Overall length: 25.5" Tube outside diameter: 1"
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