Amana 54400 Specifications:• Diameter: 1-1/4"• Radius: 3/16"• Carbide Height: 2-1/4"• Shank: 1/2"• Length: 3-3/4"Amana 54400 Features:• Special series of tools for crown or architectural molding. • Recommended for use in a router table using a heavy duty multi-speed router and fence.