Milwaukee PLUS LOK SDS Plus Extensions

Milwaukee has announced new PLUS LOK SDS Plus Extensions that address users concrete drilling needs for drilling into a double walls to drilling overhead into crowded ceilings and also for increased access in tough-to-reach areas and around obstructions. Due to their small profile design, they are ideal for drilling deep through holes with drill bits 7/8″ and larger. They’re also completely universal with all brands of SDS Plus rotary hammers and accessories!


The Milwaukee PLUS LOK SDS Plus Extensions come in two sizes, a PLUS-LOK™ SDS-Plus 12” Extension 48-20-6940 for $89.97 and PLUS-LOK™ SDS-Plus 18” Extension 48-20-6945 for $99.97 and both will be available June 2019. Check out the full press release below for all the deets.

Reach More with Milwaukee’s New PLUS-LOK™ SDS-Plus Extensions

MILWAUKEE, WI – Milwaukee Tool continues to enhance productivity on the jobsite with the introduction of the new PLUS-LOK™ SDS-Plus Extensions. These game-changing accessories can be used for extended reach and deep hole drilling and are universal with all SDS-Plus rotary hammers and accessories, including drill bits, chisels, core bits, and rebar cutters.

When drilling holes for concrete anchors, it’s not uncommon to encounter obstructions, such as previously installed pipe, which can create a tight fit for the rotary hammer. In these situations, users have had to create their own solutions to get more reach. The PLUS-LOK™ SDS-Plus Extensions change all of this by easily locking into the bit for a tool-free connection, allowing users to finally achieve the reach necessary to drill the hole in the desired location without the need for long drill bits. Each extension also outlasts several drill bits and is built to withstand aggressive applications such as side-loading or drilling through rebar in concrete.

Milwaukee Tool continues to aggressively expand its lineup of power tool accessories designed for masonry and concrete applications through game-changing solutions that save time and increase productivity on the jobsite. Visit for full listing of new concrete chipping and drilling accessories.

PLUS-LOK™ SDS-Plus Extensions

  • PLUS-LOK™ SDS-Plus 12” Extension (48-20-6940)
  • PLUS-LOK™ SDS-Plus 18” Extension (48-20-6945)

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Extensions on percussion tools dampens the force transfer. I’d like to see a hands-on review of something like this, which seems illogical up front.


While the added length would flex and as you say “dampen” impact transfer, I don’t see how that would be enough to show any noticeable decrease in performance. The same principles you’re talking about which would negatively impact rotary hammer drilling also apply to long bits and even those still operate just fine so I wouldn’t be worried about extensions and at least not in these lengths. If we were talking about a 6 foot extension, then we’d probably see some decrease in performance but these extensions aren’t long enough to impact performance noticeably.

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