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Kreg Jig® Master System (K4MS)


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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. 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.

Large Clamping Recess

The Large Clamping Recess makes it easy to secure your jig to your workbench using Kreg multipurpose 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.


Thanks to its removable drill guide, the Kreg Jig® K4 Master System can serve as many different tools: a sturdy benchtop jig which 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 with Hardened-Steel Core

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.


Body Material:

Glass-Filled Nylon

Number of Drill Guides:

(3) 3/8"-diameter standard Kreg


pocket holes

For Use with :

Materials from 1/2"- to 11/2"-thick

Drill Guide Spacings:

9/16", 7/8", 17/16"

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"


Lifetime Kreg Drill-Guide Warranty



  • Kreg Jig® K4
  • Kreg Face Clamp
  • Portable Base 
  • Drill Guide Spacer 
  • Material Support Stop
  • Dust-collection attachment 
  • 3/8" stepped drill bit 
  • 6" square driver
  • 3" square driver
  • Starter Kreg screw set 
  • Starter Kreg pocket-hole plug set 
  • Quick-Start Guide
  • SkillBuilder DVD 
  • Owner's Manual 
  • Durable and compact carrying case

Download Manual



Customer reviews for: Kreg Jig® Master System (K4MS)

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Username: JohanStrydom


July 7, 2013

has got to be the most useful single woodworking product around...

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