Dave Brown spinner is constructed of lightweight aluminum. Polished, brushed aluminum color. Includes four plastic backplate bushings, so the backplate will fit securely around any ordinary crankshaft. Designed for two-bladed props.
Weight: 3.53 oz. (100g) Spinner Backplate Thickness: .35" (8.89mm) Spinner Backplate Diameter: 3-1/4" (82.55mm) Spinner Backplate Hole Diameter: .57" (14.5mm) Length From Back Of Backplate To Front Of Cone: 3.32" (84.4mm)