The Kreg Tool PRS4038 Precision Router Table Insert Plate - Undrilled is a router table insert plate built for mounting a router into a table setup. This is a router table insert plate designed for router table mounting and routing work in woodworking shops. Model Number: PRS4038. If you want to build or upgrade a router table and need the flexibility to match your own router, this undrilled plate gives you a solid starting point without locking you into one hole pattern.

The big reason this plate matters is stability. Kreg builds it from 3/8 in. thick phenolic, which gives the router a flat, rigid surface to sit on. On a router table, that flatness is not just a nice detail. It directly affects cut consistency, fence setup, and how smoothly material moves over the table. A plate that stays level helps the bit stay where you set it, especially when you are edge profiling, pattern routing, or making repeated passes.

Because this version is undrilled, it is meant for users who want broad router compatibility instead of a preset mounting pattern. It accepts almost any router, including larger and heavier models, and the engraved alignment marks on the underside help you center the router body before drilling. That makes the install process more straightforward when you are fitting a router that does not match a predrilled plate or when you simply want control over final placement.

Kreg also includes Level-Loc reducing rings, which are a practical upgrade for day-to-day router table work. These rings let you tune the opening around the bit, giving smaller workpieces more support near the cutter and helping keep the top cleaner and more controlled around the cut area. One of the included rings is sized for use with universal-style guide bushings, which adds utility if your setup calls for guided work.

In terms of size, the plate measures 9-1/4 in. x 11-3/4 in. That makes it a straightforward fit for router table applications designed around this insert plate format. The included mounting instructions matter here because this is not a drop-in, predrilled solution. It is for the user who does not mind taking a few extra setup steps in exchange for a more universal fit.

This Kreg router accessory makes the most sense for woodworkers, cabinet installers, trim carpenters, and serious DIY users building a custom router table or replacing a worn insert plate. If you already know your router table setup and want a durable plate that can be laid out for your specific router, the PRS4038 is the smarter buy than a predrilled plate that may not line up the way you need.

Kreg Tool PRS4038 Precision Router Table Insert Plate for Router Table Flexibility

This is the version to buy when you want a quality router table insert plate but do not want to gamble on a predrilled pattern that may not suit your router.

• Who it's for: Woodworkers and shop users building a custom router table or replacing an insert plate for a router they already own.
• Why it stands out: The thick phenolic construction, alignment marks, and Level-Loc rings make it more useful than a bare plate with no setup help.
• Worth knowing: It is undrilled by design, so this is not the fastest install option. If you want universal fit, that extra setup time is the tradeoff.

• Is this plate predrilled for a specific router? No. The PRS4038 is an undrilled insert plate, so the mounting holes are drilled by the user for the router being installed.
• What is the plate made from? It is made from 3/8 in. thick phenolic.
• Will it work with large routers? Kreg states that it accepts almost any router, including larger and heavier models, when properly mounted.
• What size is the insert plate? The plate measures 9-1/4 in. x 11-3/4 in. or 235 mm x 298 mm.