SKU: 61550372072

Milwaukee Tool 48-20-3942 SDS MAX 4-Cutter MX4™ 27/32" x 17" x 21"

Sale price$103.80 Regular price$115.33
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Ships within 48 hours · Estimated delivery Jul 18 - Jul 23

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Description

Milwaukee Tool 48-20-3942 SDS MAX 4-Cutter MX4™ 27/32" x 17" x 21"The MX4 4 Cutter SDS MAX Rotary Hammer Drill Bits with solid head carbide deliver up to 5x longer life in concrete with rebar. Engineered with rebar guards to provide maximum durability in hard aggregate and rebar. The MX4 4 Cutter bits are designed with sharp centering tips for exact spot drilling in concrete. The integrated 4 cutter design prevents lock up in rebar, reducing downtime. Optimized flutes remove dust faster, reducing heat and delivering

The MX4 4-Cutter SDS MAX Rotary Hammer Drill Bits with solid head carbide deliver up to 5x longer life in concrete with rebar. Engineered with rebar guards to provide maximum durability in hard aggregate and rebar. The MX4 4-Cutter bits are designed with sharp centering tips for exact spot drilling in concrete. The integrated 4-cutter design prevents lock-up in rebar, reducing downtime. Optimized flutes remove dust faster, reducing heat and delivering up to 15% more holes per battery charge. The wear mark indicator on each drill bit shows you when they no longer meet the ANSI requirement. These MILWAUKEE® MX4 4-Cutter Drill Bits are ideal for concrete with rebar and masonry applications.

Features

  • Solid head carbide delivers up to 5x longer life in concrete with rebar

  • Rebar guards for maximum durability in hard aggregate and rebar

  • Sharp centering tip for exact spot drilling in concrete and metal decking

  • Lock Up

  • Optimized flutes remove dust faster reducing heat & delivering up to 15% more holes per battery charge

  • German Made

  • Meets ANSI B212.15 to fit common anchors

  • Wear Mark Indicators to show end of life and when bit no longer meets the ANSI requirement

  • Ideal for concrete with rebar and masonry

  • Fits all SDS-MAX rotary hammers

Specifications

Useable Length: 17 in
Cutting Depth: 17 in
Hole Diameter: 27/32 in
Flute Length: 17 in
Type: 4-Cutter
Diameter: 27/32"
Length: 21 in
Weight: 0.56 lb
Height: 0.84 in
Width: 0.84 in
Material Application: Concrete
Shank Size: 45/64 in
Includes:
(1) SDS MAX 4CT MX4 27/32" X 17" X 21"(48-20-3942)

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 61550372072

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4.2 ★★★★★
Based on 25 reviews
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L
Verified Purchase
Ligia
Carnegie, US
★★★★★ 5
Better than Kilmat
Material Type: 157mil Closed Cell Foam, Style: 157 mil 36 SqFt
Great adhesion, and you can immediately see the sound difference when you rap the area and compared it to another area without it. Also, very easy to cut and apply. Once on, you may not be able to peel it and reposition it, so be sure where you want it.
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Reviewed in the United States on March 2, 2026
J
Verified Purchase
J M.
San Leandro, US
★★★★★ 3
Not much noise reduction…
Material Type: 157mil Closed Cell Foam, Style: 157 mil 36 SqFt
Easy to install but did not provide much sound dampening…
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Reviewed in the United States on April 28, 2026
M
Verified Purchase
Mike
San Leandro, US
★★★★★ 5
Great sound mat for the price!
Style: 50 mil 50 SqFt, Style: 50 mil 50 SqFt
This is a good product. Many people go with KILMAT because of the value to price point. I did as well. When you clean the surface (in my case it was all painted metal) this stuff sticks very well. I do recommend you use a seam roller of some type, I used Lumiteco 3 piece roller set. This will help with adhesion and mostly flatten the overlapped edges. It also helps you see where you have rolled as it leaves little grooves. The difference when we had no sound mats and after was very impressive. We haven't finished our install yet and it is quieter than when we had an interior in the van. There are thicker mats available in other brands, but this will work great for our van build, but this helps keep the weight down. It is quality material, just be careful when you are removing the backing, the edge of the foil face can cut you. I suggest you layout where you are installing the mat and cut to fit. From what I have read, you don't need to cover every inch in the vehicle, just spot install for a big difference. I chose to cover most surfaces to help keep sound out when we are sleeping in the van. We haven't finished putting the van yet, but we have driven it around and been very satisfied with this product.
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Reviewed in the United States on December 3, 2025
P
Verified Purchase
Paul
Chelsea, US
★★★★★ 5
Excellent sound deadening mats
Style: 80 mil 36 sqft, Style: 80 mil 36 sqft
Purchased these for a 2020 Lexus RX350 due to the hollow sound of the car doors when shutting. They sounded cheap. The mats are super sticky and I applied them when the doors were hot from sitting in the sun. They alubutyl sticks like crazy and the end result was perfect. Now I have solid sounding doors. Good quality product.
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Reviewed in the United States on May 20, 2026
A
Verified Purchase
Amazon Customer
Lexington, US
★★★★★ 5
Awesome product 👌
Style: 50 mil 50 SqFt, Style: 50 mil 50 SqFt
I love this stuff. I use it alot. Sticks great Easy to use Molds super easy Really helps with sound. Great product. I wish I could get sponsored for this product on my projects..
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Reviewed in the United States on April 30, 2026

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