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.
Spinner Backplate Diameter: 4" (102mm) Spinner Backplate Thickness: 3/16" (4mm) Spinner Backplate Hole Diameter: 3/8" (9.5mm) Length From Back Of Backplate To Front Of Cone: 4" (102mm) Weight: 5.9 oz.