The Diablo Carbide Rounding Over Bit combines premium-grade carbide construction with a versatile profile to deliver smooth, professional edge treatments on hardwoods, softwoods, plywoods and composites. Its 1" cutting diameter and precise 1/4" radius produce a subtle, rounded edge that not only enhances the look of your workpiece but also eliminates sharp corners for improved safety and comfort. With a standard 1/4" shank, this bit installs quickly in most handheld and table-mounted routers—making it a go-to choice for furniture makers, cabinet builders and hobbyists alike.

Whether you’re crafting picture frames, molding, tabletops or decorative trim, the Diablo Carbide Rounding Over Bit offers long-lasting performance and excellent chip evacuation for cooler, cleaner cuts. Expect consistent results even after repeated use, thanks to the wear-resistant carbide tip and balanced design that minimizes vibration.

Key Features

• Precision-ground tungsten carbide tip for lasting sharpness
• 1" cutting diameter with a 1/4" radius for gentle edge rounding
• 1/4" shank fits most portable routers and router tables
• Ideal for hardwoods, softwoods, plywoods and composite panels
• Smooth, chip-free cuts and reduced heat buildup
• Balanced design for minimal vibration and extended tool life
• Perfect for decorative edging, beading and finishing profiles