Norton | Gemini® Depressed-Center Wheel: Type 27, 4-1/2" Dia, 1/4" Thick, 5/8-11 Hole, Aluminum Oxide - 24 Grit, Resinoid Bofrom $5.79 up to $32.20 Compare prices2→Depressed-Center Wheel: Type 27, 4-1/2" Dia, 1/4" Thick, 5/8-11 Hole, Aluminum Oxide