Great Planes Spinner 1-3/4" Nylon Aluminum White, Black, Red or Yellow. This is a Two-piece Two-Blade Nylon Spinner with an Aluminum Backplate.

Features:

• No adapter nut required
• Engine shaft hole is stepped to prefectly center the opening if englarging is needed.
• Sturdy Aluminum backplate holds the spinner in round-which means it turns truer, with less vibration.
• For use with engines with 5mm & 1/4" engine shafts

Includes:

• One spinner cone
• One aluminum backplate
• Two 1" abrasive discs, to keeping the aluminum plate in place
• Two 3mm x 8mm machine screws

Specs:

• Spinner Diameter: 1-3/4"
• Spinner Backplate Thickness: 1/8".
• Crankshaft Hole: Stepped from 0.201 (5.2mm) to 0.258" (6.5mm)