Key Features
Flat, rigid plate The 3/8 in thick phenolic plate gives your router a solid, level mounting surface so the bit stays where you set it. Level-Loc rings Twist-lock reducing rings change the opening around the bit and sit flush with the plate so stock does not catch. Kreg Tool PRS4038 insert plate Undrilled on purpose: you mount it to your router without a bunch of extra hole patterns you will never use.
Overview
The Kreg Tool PRS4038 Precision Router Table Insert Plate – Undrilled is a router table insert plate designed for mounting a router to a router table with a flat, level surface. Model Number: PRS4038. If you are building a table, upgrading a worn plate, or swapping routers, this plate gives you a rigid base and a clean opening around the bit.
The plate measures 9 1/4 in x 11 3/4 in, a common insert size that works for a lot of router table tops. The 3/8 in thick phenolic construction is there for one reason: stiffness. A stiff plate stays flat under the weight of big routers, which helps you keep consistent depth and cleaner profiles when you are routing edges or running joinery.
Because this version is undrilled, you are not stuck with a random cluster of hole patterns. Instead, the underside has alignment marks to help you center the router, plus starting points to help you drill accurate mounting holes for many popular routers. That means a cleaner install and less guesswork when you are laying out the bolt pattern.
The Kreg Level-Loc reducing ring system lets you size the opening around the bit for better support on small parts and tighter cut control. The rings twist into place with the included ring wrench and lock in level and flush with the plate surface, so workpieces slide smoothly without catching on a proud ring.
This insert plate is built for router table work where accuracy matters: edge profiling, pattern routing, dados, rabbets, and joinery with larger bits. It is a solid pick for woodworkers and cabinet shops that want a dependable, flat mounting surface and do not want to pay for predrilled patterns they are not using.
Flush Rings for Smooth Feeding
When you close up the opening around the bit, stock stays supported and you get better control on narrow pieces. The Level-Loc rings are made to sit flush, so the work does not hang up at the insert.
- Includes three reducing rings: 1 in, 1 3/16 in (for universal-style guide bushings), and 2 5/8 in
- Rings twist-lock into place with the included ring wrench
Center the Router, Drill Your Pattern
This is the version you buy when you want the plate to match your router, not the other way around. The alignment marks help you center the base so the bit lands where it should in the opening.
- Undrilled plate for custom hole layout
- Alignment marks and starting points help speed up drilling and mounting
Thick Phenolic for a Level Surface
A router table is only as accurate as the surface your router is bolted to. The thicker phenolic plate is built to stay flat and support large, heavy routers.
- Plate size: 9 1/4 in x 11 3/4 in
- Plate thickness: 3/8 in (phenolic)
What’s in the Box
- (1) Kreg Precision Router Table Insert Plate (Undrilled)
- (1) Level-Loc reducing ring, 1 in (25 mm)
- (1) Level-Loc reducing ring, 1 3/16 in (30 mm)
- (1) Level-Loc reducing ring, 2 5/8 in (67 mm)
- (1) Ring wrench
Key Specifications
| Plate Size | 9 1/4 in x 11 3/4 in (235 mm x 298 mm) |
|---|---|
| Plate Thickness | 3/8 in (9.5 mm) |
| Material | Phenolic |
| Weight | 3.0 lb |
| Reducing Ring Sizes | 1 in, 1 3/16 in, 2 5/8 in |
| Made In | United States |
Compatibility
Routers Undrilled plate with alignment marks to help center and mount on almost any router (including large, heavy models). Guide bushings Includes a 1 3/16 in reducing ring sized for universal-style guide bushings.
Built For
Woodworking Cabinetry Router tables Edge profiling Dados and rabbets Template and pattern routing
Pro Tip
Before you drill the mounting holes, use the underside alignment marks to center the router base, then start with small pilot holes and work up to size so the phenolic stays clean and the hardware lands dead-on.
Tool Nut’s Take
Tool Nut’s Take
Go undrilled when you want it done right
If you are mounting a router that does not match the common predrilled patterns, the Kreg Tool PRS4038 Precision Router Table Insert Plate – Undrilled keeps the plate clean and lets you drill exactly what you need.
- Who it’s for: Woodworkers and cabinet guys setting up a router table and wanting a stiff, flat plate with a custom mount pattern.
- Why it stands out: Thick phenolic plus the Level-Loc reducing rings that lock in flush, so feeding stock feels smooth and controlled.
- Worth knowing: You will be drilling the router mounting holes yourself on this version, which is the whole point, but plan on taking your time on layout.
Common Questions
- Is this insert plate predrilled for any router? No. PRS4038 is the undrilled version and is meant to be drilled to match your router.
- What reducing rings are included? Three Level-Loc rings are included: 1 in, 1 3/16 in (for universal-style guide bushings), and 2 5/8 in.
- How thick is the plate? It is a 3/8 in thick phenolic insert plate.
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