The Kreg KPHA308 Easy-Set Drill Bit with Stop Collar & Gauge/Hex Wrench is a replacement pocket-hole drilling accessory set for Kreg joinery systems. This is a pocket-hole drill bit accessory designed for drilling consistent pocket holes in common board thicknesses. Model Number: KPHA308. If you want a second setup ready to go, or you need to replace the original parts from your jig, this kit gives you the core pieces that control bit depth and material thickness without slowing down your workflow.

What matters here is the easy-set design. The stepped drill bit is etched for 1/2 in., 3/4 in., and 1-1/2 in. material, and the stop collar has a viewing window that aligns to those marks. In practical terms, that means less trial-and-error when you're moving between common stock sizes for face frames, cabinet parts, utility shelving, and general woodworking. You can get back to drilling pocket holes instead of checking setup against a chart every time.

The included material-thickness gauge does more than just measure stock. It is marked for the same common thicknesses and also has a built-in hex wrench for tightening or adjusting the stop collar. That is the kind of simple detail that makes sense on the bench. Instead of hunting for another tool, you can check stock thickness and lock in your setting with the same piece.

The bit itself uses a 1/4 in. hex shank, so it fits standard quick-change chucks. That makes the Kreg KPHA308 Easy-Set Drill Bit with Stop Collar & Gauge/Hex Wrench easy to drop into the drill you already use with your pocket-hole jig. For anyone running repeat joinery, having a dedicated bit setup saves time, especially if one jig stays set for thinner stock and another for thicker material.

Compatibility is a strong point. Kreg lists this as a direct replacement for the accessories included with Pocket-Hole Jig 320, 310, 520PRO, 720, and 720PRO. It also works with older and other Kreg systems including K5, K4, K3, R3, Mini, and Foreman (DB210). The only clear limitation is that it does not fit Kreg Micro or XL pocket-hole systems, so it is built for the standard pocket-hole range rather than those specialty sizes.

For build quality, the important facts are straightforward: the bit is steel, the setup references are engraved into the bit, and the whole set is meant for repeated shop use rather than one-off assembly. This is not a flashy accessory. It is the part of the system that helps keep pocket-hole depth consistent, which directly affects screw seating, joint strength, and how cleanly parts pull together.

If you are a cabinet installer, trim carpenter, furniture builder, remodeler, or serious DIY woodworker already using Kreg pocket-hole joinery, this set makes sense. It is especially useful if your original bit is worn, if you want a backup on hand, or if you are tired of resetting a single bit assembly between jigs. For occasional users, it is a solid replacement. For frequent users, it is the kind of spare that keeps a project moving.

Kreg KPHA308 Easy-Set Drill Bit with Stop Collar & Gauge/Hex Wrench Is a Smart Spare for Any Pocket-Hole Setup

This is the kind of replacement accessory that earns its keep the first time your original bit gets dull or you want a second jig ready to go.

• Who it's for: Woodworkers, cabinet guys, remodelers, and serious DIY users running Kreg pocket-hole jigs on a regular basis.
• Why it stands out: The etched setup marks, matching collar window, and combined gauge/wrench make depth setup quicker and more repeatable than piecing together generic replacements.
• Worth knowing: It works across a wide range of Kreg standard pocket-hole jigs, but it is not for the Micro or XL systems.

• What material thicknesses is this set marked for? The bit and gauge are marked for 1/2 in., 3/4 in., and 1-1/2 in. material.
• Will this fit a standard quick-change drill chuck? Yes. It uses a 1/4 in. hex shank that fits standard quick-change chucks.
• Which Kreg jigs does it work with? It is a direct replacement for Kreg 320, 310, 520PRO, 720, and 720PRO, and it also works with K5, K4, K3, R3, Mini, and Foreman (DB210).
• Does it work with Kreg Micro or XL pocket-hole jigs? No. Kreg lists Micro and XL as excluded.