Key Features
Fast Bit ChangesThe QUIK-LOK design lets you swap compatible bits without extra tools, which saves time when you are moving from one hole or fastening task to the next. Universal 7/16 in. FitThis Milwaukee extension accepts all 7/16 inch shanks, including bits with or without a power groove, so it works across a wide range of self-feed and large-hole boring accessories. Impact Rated StrengthBuilt for impact-rated use with a hardened steel shank, this bit holder style extension is made to handle tougher drilling work without being a weak link in the setup.
Overview
The Milwaukee 48-28-1030 5-1/2 in. x 7/16 in. Universal QUIK-LOK Extension is a bit holder and extension designed for extending 7/16 inch shank accessories in drilling applications where extra reach and quick bit changes matter. This is a bit holder extension designed for drilling and accessory reach extension. Model Number: 48-28-1030. If you are running larger boring accessories and need a compact extension that does not slow you down, this is the piece that makes the setup more practical.
The main reason this extension matters is its universal QUIK-LOK interface. Milwaukee states it accepts all 7/16 inch shanks, including accessories with or without a power groove. In real use, that means less second-guessing about whether a particular bit will lock in properly. For electricians, plumbers, remodelers, and general contractors drilling repeated holes, that kind of compatibility saves time and cuts down on swapping between different holders.
The quick-change design is another real benefit on the job. Instead of stopping to mess with extra tools just to switch accessories, you can change bits quickly and keep moving. That is useful when you are drilling multiple hole sizes in framing, rough-in work, or general construction tasks where setup speed adds up over the course of the day.
Milwaukee also rates this extension for impact use, which is important because an extension takes stress from both the tool and the accessory. Combined with the hardened steel shank, the build is aimed at durability rather than just basic fit. If you are using it in tougher conditions or pairing it with heavy-duty drilling accessories, that added strength is the reason to buy a purpose-built extension instead of a lighter-duty adapter.
At 5-1/2 inches long, this extension adds reach without becoming awkward. It is long enough to help get past obstructions or work into tighter spaces, but still short enough to keep the setup manageable. The minimum chuck size required is 1/2 inch, so it is built around larger-capacity drills and similar tools that are meant to handle 7/16 inch shank accessories correctly.
Who should buy it? This Milwaukee 48-28-1030 5-1/2 in. x 7/16 in. Universal QUIK-LOK Extension makes the most sense for tradespeople and serious DIY users already working with 7/16 inch shank boring accessories and looking for more reach, quicker changes, and a tougher connection point. If your work involves repetitive drilling, rough-in, or large-hole boring and you do not want your extension to be the weak spot, this is the right kind of accessory.
Get Extra Reach Without Slowing Down
This extension is built for users who need a little more reach while keeping bit changes quick and straightforward. It is a simple accessory, but it solves a real problem when standard accessory length is not enough.
- 5-1/2 in. overall length adds reach for drilling setups
- QUIK-LOK system accepts all 7/16 in. shanks
- No tools required for changing bits
- Impact rated for tougher use
What’s in the Box
- (1) Milwaukee 48-28-1030 5-1/2 in. x 7/16 in. Universal QUIK-LOK Extension
Key Specifications
| Length | 5-1/2 in. |
|---|---|
| Shank Diameter | 7/16 in. |
| Minimum Chuck Size Required | 1/2 in. |
| Material | Steel |
| Weight | 0.75 lbs |
| Style | QUIK-LOK |
Compatibility
Accessory FitAccepts all 7/16 in. shanks, including accessories with or without a power groove. Tool RequirementRequires a drill or compatible tool with a minimum 1/2 in. chuck capacity.
Built For
Electrical rough-in Plumbing rough-in General Contracting Remodeling Construction Large-hole drilling
Pro Tip
Before you blame the extension for slop, check your tool first. This model needs a 1/2 inch chuck, and that matters because larger 7/16 inch shank accessories need the right chuck capacity to lock up securely.
Warranty & Support
No manufacturer’s warranty.
Tool Nut’s Take
Tool Nut’s Take
Milwaukee 48-28-1030 Universal QUIK-LOK Extension Keeps Bigger Drilling Setups Moving
If you already run 7/16 inch shank accessories, this is the kind of extension that earns its place fast because it adds reach, changes over quickly, and is built for impact-rated work.
- Who it’s for: Electricians, plumbers, remodelers, and contractors using larger boring accessories with 7/16 inch shanks.
- Why it stands out: Universal 7/16 inch shank acceptance, tool-free QUIK-LOK changes, and impact-rated durability in one simple accessory.
- Worth knowing: This is not for small-driver setups. You need a 1/2 inch chuck minimum, and the box includes the extension only.
Common Questions
- What shank size does this extension accept? It accepts all 7/16 inch shanks, including those with or without a power groove.
- Does this require tools to change bits? No. The QUIK-LOK design allows quick bit changes without extra tools.
- Is this extension impact rated? Yes. Milwaukee lists this extension as impact rated.
- What size chuck is required? A minimum 1/2 inch chuck size is required.
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