76mm white nylon spinner by Great Planes

This is a two-piece two-Blade 76mm. white nylon spinner with nylon backplate. INCLUDES: one spinner cone, one backplate, two screws, instructions on header card. SPECS: spinner diameter: 3" - spinner backplate thickness: 3/16" - crankshaft hole: 1/4"(may be reamed to 7mm, 5/16", or 3/8"). This is a sport plastic spinner and not designed for use with high performance engines or engines with tuned pipes. Operation above 14,000 RPM is not recommended.