Good Directions 401ALCC Adjustable Aluminum Garden Weathervane Roof Mount Durable aluminum roof mount which fits Good Directions Garden and Cottage size weathervanes Easy to adjust and install Accepts up to 11/32" diameter weathervane rod For larger weathervanes with a larger rod (up to 3/4" diameter rod) use Good Directions 401AL Roof Mount (sold separately) which fits our Standard size weathervanes Mounting plates measure: 2-1/2-inch x 2-1/2-Inch with 3 mounting holes per plate Dimensions: 9-Inch L x 2-1/2-Inch W x 5-3/4-Inch H