Model#: DEWNDCE400B

What are the different product conditions?

Brand new items;Full manufacturer warranty available
Manufacturer inspected, repaired and tested items; CPO 120 day money back guarantee
Open Box
New items with possible minor cosmetic damage; CPO 120 day money back guarantee
Returned items inspected, repaired and tested by CPO technicians; CPO 60 day money back guarantee

Dewalt DCE400B 20V MAX Cordless Lithium-Ion 1 in. PEX Expander (Tool Only)

new lower price
  • Dewalt DCE400B 20V MAX Cordless Lithium-Ion 1 in. PEX Expander (Tool Only)
  • Note: Battery and Charger sold separately
(See Price in Cart)
Free Shipping
(continental U.S.)
In Stock Delivered by Tue., Oct.22

Frequently Bought Together


Expand PEX Type-A tubing from 3/8 in. to 1 in. with the 20V MAX Cordless 1in. PEX Expander, the fastest PEX Expander on the market. It’s proudly made in the USA with global materials. An automatic rotating head helps to ensure even expansion. The bright onboard LED work light and full trigger actuation make it an excellent tool in dimy lit, tight spaces. Carry this tool conveniently around the jobsite with a dual-sided hang hook and belt hook. Rubber overmold on the handle provides an ergonomic grip to keep you comfortable all day. This tool uses DEWALT PEX Heads, and it is compatible with leading competitive PEX heads.
  • Expands 3/8 in. - 1 in. Pex Type-A tubing
  • Automatic rotating head action for even expansion
  • Full trigger actuation for use in tight spaces
  • Dual-sided hang and belt hooks for convenient storage
  • Bright LED work light to help illuminate dark areas
  • Rubber overmold for comfortable, ergonomic grip
  • PEX Expander Grease
  • Kit Box
  • 3/4 in. Expander Head - DCE40034
  • 1/2 in. Expander Head - DCE40012
  • 1 in. Expander Head - DCE4001
Compliance and Restrictions
warning: This product can expose you to Lead, which is known to the State of California to cause Cancer and Birth Defect/Reproductive Harm. For more information go to


Cordless: Yes
Length: 18.06 in.
Width: 4.88 in.
Height: 12.63 in.
Weight: 10.1 lbs.
AutoRotation: Yes
Batteries Included: 0
Battery System: 20V MAX
Battery Type: Li-Ion
Bluetooth Compatibility: No
CSA Safety: Yes
Capacity: 3/8 in - 1 in
Case Included: Yes
Case Type: Hard
Charger Included: No
ETL Safety: No
Expander Mechanism: Pex
Head Compatibility: Milwaukee and Uponor Heads
Heads Included: 3
LED Light: Yes
Motor Type: Brushed
Power Source: Electric-Cordless
Speed: 60 SPM
UL Safety: No
Voltage: 20V
Wifi compatibility: No



5.0 / 5.0
2 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Yes, I would recommend this to a friend (1)
Easy To Use (1)
Heavy (1)
Best Uses
Frequent Use (1)
Large Projects (1)
Small Projects (1)
Home Repair (1)
Very effective tool
This tool is very easy to use.
For anyone using PEX-A or planing to use this type of pex, this tool is a must. Has all common size tool heads. Would recommend any day
This review was collected as part of a promotion
November 19, 2018
Originally posted at
Yes, I would recommend this to a friend
Easy To Use
Best Uses
Frequent Use
Large Projects
Small Projects
Home Repair
Excellent Product
Ok, so I was pretty excited to see Dewalt added a MADE IN USA Pex A expander tool to work with the 20v system. The tool is awesome, plenty of power and works flawlessly for the intended application. My first unit arrived and was defective out of the case, CPO did a great job shipping me the replacement, thats the one I am reviewing. Point is, if you need it, get this one, its cheaper than the Milwaukee and if you have the 20v system already its a no brainer, thanks to CPO for great customer service,
February 18, 2018
1 year ago
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Questions & Answers

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Browse 7 questions Browse 7 questions and 15 answers
Do the three expansion heads come with the "tool only" version as in the picture?
A shopper on Oct 30, 2017
BEST ANSWER: Yes, all 3 and the grease.
Does this include the 1/2 3/4. And 1 inch expanders? Everything except batteries and charger?
A shopper on Dec 12, 2017
BEST ANSWER: That is correct.
Is this compatible with Upor Pro Pex?
John M on Dec 1, 2017
BEST ANSWER: Type "A" pex is the proper pex that you expand.
So yes, this is the tool that will work with uponor. Pro pex.
Will this work with dewalt 20v DCB203 battery?
A shopper on Jun 30, 2018
BEST ANSWER: Yes, it will power it with no problem.
Does this include batteries and charger?
A shopper on Sep 2, 2018
BEST ANSWER: I bought the “tool only” version with no battery or charger. The description will tell you if it comes with a battery or is “tool only”.
Can you use flex volt battery pack on this tool?
A shopper on Jun 6, 2018
BEST ANSWER: Yes, the flexvolt battery is backwards compatible with the 20V max family.
What comes in the box?
A shopper on Feb 8, 2018
BEST ANSWER: It comes with the tool and three expander heads 1/2", 3/4" and 1". They also give you a tube of lubricant. This version is tool only no battery.