Kreg Pocket-Hole Jig Expansion Pack: What It Adds to Your 320 or 520

If you already own a Kreg Pocket-Hole Jig 320 or 520, you know the satisfaction of drilling perfectly angled pocket holes that make joinery fast and strong. But as your projects grow from simple shelves to full cabinets or farmhouse tables, you might find yourself wishing your jig could handle wider boards or clamp more securely. That's where the Kreg Pocket-Hole Jig Expansion Pack comes in.

In this review, we'll break down exactly what the expansion pack adds to your existing jig, how it improves your workflow, and whether it's a smart investment for your workshop. We'll also compare it to other Kreg accessories like the Pocket-Hole Screw Project Kit and the Kreg Dowel Jig Kit, so you can decide which upgrades matter most for your woodworking style.

What's Included in the Expansion Pack

The Kreg Pocket-Hole Jig Expansion Pack is designed to extend the capabilities of your 320 or 520 jig. It typically includes a wider base plate, additional clamping pads, and sometimes a longer drill guide. The exact contents can vary, but the core benefit is that it allows you to work with boards that are wider than the standard jig's capacity.

For example, the standard Kreg Pocket-Hole Jig 520PRO handles boards up to 1.5 inches thick, but its clamping width is limited. The expansion pack adds a wider clamping surface, so you can securely hold workpieces that are 3 inches wide or more. This is a game-changer for building face frames, cabinet sides, or any project that involves joining wide panels.

The pack also includes thicker clamping pads that reduce the risk of denting softer woods. This is particularly useful when working with pine or cedar, which can easily show marks from metal clamps.

• Wider clamping capacity for boards up to 3 inches or more
• Additional clamping pads for better grip and reduced marring
• Longer drill guide for deeper pocket holes in thicker stock

How It Enhances Your Kreg 320 or 520

If you own the Kreg Pocket-Hole Jig 320, you know it's a compact, portable option that's great for small projects. But its clamping range is limited, and you often need to reposition the jig for larger pieces. The expansion pack transforms the 320 into a more versatile tool, allowing you to clamp and drill in one pass on wider boards.

For the Kreg Pocket-Hole Jig 520PRO, the expansion pack takes an already excellent tool and makes it even better. The 520PRO is known for its precision and ease of use, but with the expansion pack, you can tackle bigger projects without needing a separate jig. This means less time setting up and more time building.

The expansion pack also improves the stability of your jig. The wider base distributes clamping pressure more evenly, reducing the chance of the jig shifting during drilling. This results in more accurate pocket holes, which is critical for strong joints.

• Saves time by reducing repositioning on wide boards
• Improves accuracy with a more stable platform
• Works with both 320 and 520 models for flexibility

Is It Worth the Upgrade?

The short answer is yes, especially if you frequently work with boards wider than 2 inches. The expansion pack is relatively inexpensive compared to buying a whole new jig, and it extends the life and usefulness of your current setup.

However, if you only build small items like jewelry boxes or picture frames, you might not need the extra capacity. In that case, you might be better off investing in other accessories like the Pocket-Hole Screw Project Kit, which includes a variety of screws for different applications, or the Kreg Dowel Jig Kit if you prefer dowel joinery for certain projects.

But for most woodworkers who plan to grow their skills, the expansion pack is a smart addition. It's a low-cost way to future-proof your jig and handle a wider range of projects without upgrading to a larger, more expensive system.

• Cost-effective upgrade compared to buying a new jig
• Ideal for projects like cabinets, tables, and shelving
• Pairs well with other Kreg accessories for a complete system

Comparing to Other Kreg Accessories

When considering the expansion pack, it's helpful to see how it fits into the broader Kreg accessory lineup. For instance, the Pocket-Hole Screw Project Kit is essential for having the right screws on hand. It includes #7 and #8 screws in various lengths, perfect for most pocket-hole joinery. The expansion pack, on the other hand, is about increasing the jig's physical capacity.

Another popular accessory is the Kreg Dowel Jig Kit, which is a different joinery method altogether. Dowel joinery is strong and can be a good alternative for certain projects, but it doesn't replace the speed and simplicity of pocket holes. The expansion pack enhances your pocket-hole experience, while the dowel jig adds a new skill to your toolbox.

If you're looking to expand your workshop's capabilities, you might also consider the Kreg® Edge 20V Ionic DriveTM Loose Tenon Joiner Kit, which offers another type of joinery. But for those focused on pocket holes, the expansion pack is the most direct upgrade.

• Expansion pack: increases jig capacity and stability
• Screw kit: ensures you have the right fasteners
• Dowel jig: adds a different joinery method

The Kreg Pocket-Hole Jig Expansion Pack is a practical, affordable upgrade that significantly expands the capabilities of your 320 or 520 jig. Whether you're tackling wider boards or just want more stability, it's a worthwhile addition to any woodworker's toolkit. If you're ready to take your pocket-hole game to the next level, check out the Kreg Pocket-Hole Jig 520PRO to see how it pairs with the expansion pack for professional results.