The Freud 12-110 3/8-Inch Double Flute Straight Router Bit (Eclipse Grind) is a carbide-tipped straight router bit built for clean grooving, edge-routing, and general-purpose routing work. This is a router bit designed for grooving, edge-routing, and general-purpose routing in wood and composite materials. Model Number: 12-110. With a 3/8 inch cutting diameter, 1-1/4 inch carbide height, and 1/2 inch shank, it fits the kind of routing jobs where you want a controlled cut, a smooth wall, and a bit that can handle repeated use without giving up edge quality too early.

Where this bit earns its keep is versatility. The 3/8 inch diameter is a useful middle-ground size for grooves, slots, dados, trimming edges, and general routing where a smaller pattern bit feels too light and a larger cutter feels like overkill. Freud rates it for use up to 24,000 RPM, so it is built to run at the speeds most woodworkers and cabinet installers actually use on modern routers. The double flute layout helps balance material removal and finish quality, so you get a cleaner pass in hardwood, plywood, MDF, particle board, OSB, and other composite sheet goods.

Freud also builds this bit with its TiCo Hi-Density Carbide cutting edges. That matters because carbide quality is what separates a bit that cuts clean for a while from one that stays useful through real shop work. On practical terms, better carbide means longer edge life, more consistent cuts, and less time swapping bits in the middle of a project. If you do repeated routing in plywood or abrasive composite materials, that durability is not a minor detail. It is one of the main reasons to buy a better bit in the first place.

The Eclipse Grind and relieved tip geometry are there for a reason. This bit is not limited to edge passes. It is also designed to plunge efficiently, which makes it a better choice for stopped grooves, pockets, and interior routing starts where you need the bit to enter the material cleanly. Instead of fighting a rough entry or burning the work while easing into the cut, you get a bit that is meant to start cutting with better control.

From a machine-fit standpoint, the 1/2 inch shank is the right call for stability. A larger shank helps reduce chatter compared to smaller-shank bits, especially when you are working in harder stock or running deeper passes. That makes the Freud 12-110 a smart option for table-mounted routers, hand-held routers, and CNC routers where consistent tracking and smooth cut quality matter. If your work moves between shop routing and jobsite routing, this bit gives you that flexibility without changing your workflow.

This bit is a strong fit for cabinetmakers, trim carpenters, woodworkers, furniture builders, and serious DIY users who want one straight bit that can handle more than a single niche task. It is especially useful if you work across solid wood, plywood, and sheet goods and need reliable cut quality without stepping up to a specialty bit for every operation. If your router spends time cutting grooves, straight channels, dados, or edge details, this is the kind of everyday-use straight bit that makes sense to keep in regular rotation.

Freud 12-110 3/8-Inch Double Flute Straight Router Bit (Eclipse Grind) is a smart everyday shop bit

If you want one straight bit that covers a lot of real routing work and does it cleanly, this is an easy pick.

• Who it's for: Woodworkers, cabinet installers, trim carpenters, and serious DIY users cutting grooves, dados, edge details, and pockets in solid wood or sheet goods.
• Why it stands out: The 1/2 inch shank gives it better stability, the double flute profile helps with finish quality, and the TiCo carbide is what makes it worth buying over a bargain-bin bit.
• Worth knowing: This is a single router bit, not a kit. It is best used in routers that accept a 1/2 inch shank, and taking sane pass depths will reward you with cleaner cuts and longer edge life.

• What type of cut does this bit make? It is a straight cut router bit designed for grooving, edge-routing, and other general-purpose routing tasks.
• Will this bit work in a CNC router? Yes. Freud states it is designed for use in CNC, hand-held, and table-mounted routers.
• What collet size does it require? This bit has a 1/2 inch shank, so it requires a router with a 1/2 inch collet.
• What materials is it made to cut? It is designed for hardwood, softwood, plywood, MDF, particle board, OSB, and other composite materials.
• What is the maximum rated speed? The maximum rated speed is 24,000 RPM.