Kreg Jig® K4 Master System

Average Review (8):

The Do-It-Yourself Kreg Jig® with Bonus Accessories

  • Removable Drill Guide for benchtop and portable use
  • Drill Guide includes 3-hole fixed spacing
  •  For use with materials 1/2" to 11/2" (12-38mm) thick in 1/8" (3mm) incremental settings
  • Dust-Collection Shroud collects wood chips as you work
  • Material Support Stop for consistently repeating hole spacings
  • Hardened-steel Kreg Drill Guides feature a lifetime warranty
  • Click here for a side-by-side comparison of all Kreg Jigs®



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The Do-It-Yourself Kreg Jig® with Bonus Accessories
The Kreg Jig® K4 Master System is a great choice for any woodworking enthusiast looking for a complete set to get started building with Kreg Joinery™. With its solid clamp, large clamping recess, dust collection attachment, material support stop, and removable 3-hole drill guide, this jig truly has it all. The Master System includes a Kreg Jig® K4, Bonus Kreg Accessories: the Kreg Face Clamp, Portable Base, and more.

Large Clamping Recess
The Large Clamping Recess makes it easy to secure your jig to your workbench using Kreg multi-purpose Face Clamps or any common bar clamp or C-clamp.

Sturdy Toggle-Clamp
The Kreg Jig® K4's rear-mounted clamp design has been around since the first Kreg Jig®. It's a proven design, offering incredible rigidity and uncompromising workpiece hold-strength. Adjustments are as easy as releasing the locknut and rotating to the correct setting.

3 Tools in 1
Thanks to its removable Drill Guide, the Kreg Jig® K4 Master System can serve as many different tools: a sturdy benchtop jig that utilizes the benchtop base for high speed pocket holes, a contractor-grade jig for work on the road through the use of the portable base, and a high-quality repair jig when you add spacer blocks to the bottom of the drill guide.

3-Hole Drill Guide
The 3-hole Drill Guide lets you drill pocket holes in a wide variety of material widths and thicknesses—from 1/2" to 11/2" in 1/8" increments. Every Kreg Drill Guide features a hardened-steel core, which carries a lifetime guarantee. The core shrouds the bit and supports the workpiece through 100% of the drill-stroke, resulting in minimal bit deflection, reduced tear-out, and a clean, pluggable pocket hole.

Material Support Stop
The Material Support Stop can be set at any distance from the jig to help you repeat the same pocket holes over and over again. The stop can also be swung out of the way to serve as a height support for larger panels.

Glass-Reinforced Nylon Body
The blue body of every Kreg Jig® K4 is made from a heavy-duty, glass-reinforced nylon. This composite material offers the resiliency and flexibility you need without sacrificing the strength and durability Kreg customers have come to expect.

Superior Angle
Unlike competing jigs with a shallower angle of approach, the Kreg Jig® K4 Master System features an optimized drilling angle, specifically designed to increase driving efficiency and minimize the overall size of the pocket hole. The result is a compact pocket hole, less than 11/2" in size.

Wood-Chip Relief
The Kreg Jig® K4 Master System includes one wood-chip relief hole for every Drill Guide hole, designed to keep the drill bit clear of excess wood chips, minimize drill torque, increase the longevity of your drill bits, and allow you to complete a perfect pocket hole in just one plunge.

California Residents: Prop 65 Information


Body Material

Glass-filled nylon

Number of Drill Guides

(3) 3/8" (9mm) diameter standard Kreg® pocket holes

For Use with

Materials from 1/2" to 11/2" thick (12-38mm)

Drill Guide Spacings

9/16", 7/8", 17/16"
14mm, 22mm, 36mm

Clamping Method

Toggle clamp on benchtop base
Face clamp for portable base

Screw-Centering Ability

1/2", 5/8", 3/4", 7/8", 1", 11/8", 11/4", 13/8", 11/2"
12mm, 16mm, 19mm, 22mm, 25mm, 28mm, 31mm, 35mm, 38mm


Lifetime Kreg® Drill Guide warranty


Kreg Jig® K4, Kreg® Face Clamp, Portable Base, Drill Guide Spacer, Material Support Stop, dust-collection attachment, 3/8" (9mm) stepped drill bit, 6" (152mm) square driver, 3" (76mm) square driver, starter Kreg® Screw set, pocket-hole plug set, and owner’s manual.

Manual North American Manual
Global Manual

Reviews for "Kreg Jig® K4 Master System"

Average Review:

Well worth its weight in Gold

I bought the Kerg K4 to build a dinning room table. And when I finished the table I was amazed of how much time I saved with the pocker holes vs using biscuits. Not waiting for the glue to dry and tons of clamps. I was so impressed I purchased different Kreg tools for my shop. I have built kitchen cabinets all the way to hand crafted furniture. I wish had bought the kreg jig years ago! What makes the Pocket Hole Jig Awesome is how it's so easy for my kids to use it. Have made some bonding time with my kids and share my passion for woodworking with them. To see there smiles, makes my day.


By Louis Shackelford

February 2, 2017


Upgraded to this bad boy from the mini and I could not be happier. This jig makes everything a whole lot faster and easier. I should have bought this right from the beginning.


By Ray Peredo

November 29, 2016

First Day with the K4 Master System

Outstanding. I had already started a cabinet job. but today on the way to the worksite, I sprung for this set. it paid for itself today. literally. It makes internal Joinery so simple. I had at first thought the lack of onboard storage for the allen wrench was an issue. but once I got home and viewed the CD that was supplied. I realized this was even taken into account. An outstanding jig. Love it so much.


By Steven Mildward

July 3, 2015

Life is simple with Kregs

I just could not wait to receive my K4 Master system, I must say every handyman or every home should have one, good quality product, I live in New Zealand and I am proud to be a holder of the the Kregs System and I would love to see more exciting products in future


By Pramod Tailor

May 11, 2015

Pleasantly surprised

I had some skepticism with the pocket hole joinery. A woodworking friend had just purchased the K4 Master System and offered to loan me his K3 for a fairly major project. I purchased the Kreg K4 Master system with the assumption that if it wasn't going to meet my needs, I'd just take it back. I joined an 18"x4"x3/4" piece of scrap plywood to a 3/4x3/4 rabbeted 2x6 about 6" long with 2 pocket holes and two #8 1-1/4" Kreg coarse thread screws. I used the joined pieces for a mallet and generally tried to make the joint fail. It didn't. I'm sold. My workbench project is proceeding nicely and is extremely solid. I'd recommend the Kreg system to anyone. It's easy to use and makes great tight joints. I only wish I had waited for the K5 to make it easier to clamp larger workpieces when drilling the pocket holes.


By Tim Grace

February 8, 2015

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