Router bits are selected by the cut or profile required, the dimensions of that cut, the shank and collet system, and the material and machine setup. Start with the finished feature you need rather than choosing a bit only because its overall diameter looks suitable.
Straight bits are used for suitable straight cuts, grooves and recesses. Slotting bits create defined slots where the cutter and setup match the required width and depth. Cove and round-nose bits form concave profiles, while corner-round bits create a radius on an edge.
The live category includes bearing-guided profiles and replacement bearings. A bearing can guide the cut against an edge or template on compatible bits, but its diameter and mounting must match the specific cutter. Never assume that a replacement bearing fits every router bit.
Confirm the shank diameter against the router collet, then verify cutting diameter, cutting length, overall length and profile radius where applicable. Use only a properly seated bit and a compatible, serviceable collet. Set depth in controlled passes appropriate to the machine, cutter and material rather than forcing a deep cut in one pass.
Feed direction, cutter speed and workholding affect control and finish. Follow the router and cutter manufacturer's instructions, secure the work, and use guards and extraction where provided. Do not infer a speed rating or material capability from this category description.
Browse the wider Tools catalogue for routing accessories and related workshop equipment.
Can any router bit fit any router? No. The shank must match a compatible collet, and the machine must be suitable for the cutter and operation.
What router bit should I use for a rounded edge? A corner-round profile is a common route, but choose the radius and dimensions required for the work and confirm compatibility.
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