Fits all 1 inch poles (outside diameter). Comes with a stainless steel mid-ring to thwart squirrels. Guaranteed squirrel proof. Rustproof. Lifetime Care. For the Squirrel Buster Plus

Weight 0.75 lbs
Dimensions 3.00 (D) x 9.00 (W) x 11.00 (H) inches
Dimensions (Metric) 7.62 (D) x 22.86 (W) x 27.94 (H) centimeters