20V Max Lithium Ion Cordless PEX Expansion Tool Kit, w/ 1/2", 3/4" and 1" Heads, (2) Batteries, Charger

The DeWalt DCE400D2 is a cordless PEX expansion tool built to expand PEX Type-A tubing from 3/8" to 1" faster than any competing tool on the market. This 20V Max system delivers 60 strokes per minute with an automatic rotating head that ensures even expansion on every connection, eliminating the fatigue and inconsistency that comes with manual expanders. Designed for plumbing professionals working in tight crawl spaces, behind walls, and under sinks, this tool pairs full trigger actuation with a compact 6.75" length so you can make reliable connections where other tools won't fit. The kit arrives ready to work with three expansion heads (1/2", 3/4", and 1"), two 20V Max lithium ion batteries, a charger, PEX expander grease, and a rugged kit box for organized storage and transport.

• Fastest Expansion Speed: Operates at 60 strokes per minute, cutting job time in half compared to manual expanders and keeping pace with the fastest work schedules.
• Automatic Rotating Head: The head rotates automatically during each expansion cycle to distribute pressure evenly around the tubing, preventing weak spots and ensuring leak-proof connections every time.
• Full Trigger Actuation for Tight Spaces: The trigger activates expansion with minimal hand movement, letting you work in cramped joist bays, wall cavities, and under fixtures where you can't get a full grip on larger tools.
• Bright Onboard LED Work Light: An integrated LED illuminates dark work areas so you can see tubing alignment and fitting position clearly, reducing errors in basements, crawlspaces, and behind appliances.
• Dual-Sided Hang Hook and Belt Hook: Hang the tool on joists or clip it to your belt between connections, keeping it within reach and off dirty floors throughout the day.
• Rubber Overmold Grip: The ergonomic handle reduces hand strain during all-day use and provides secure control even when your hands are wet or greasy.
• Cross-Brand Head Compatibility: Uses DeWalt PEX heads and accepts Milwaukee and Uponor expansion heads, so you can standardize on one tool body across different fitting systems.
• 20V Max System Integration: Shares batteries with the full DeWalt 20V Max cordless platform, eliminating the need to carry multiple chargers and battery types to the jobsite.

This tool expands PEX-a tubing in five sizes: 3/8", 1/2", 5/8", 3/4", and 1". The kit includes expansion heads for 1/2", 3/4", and 1" tubing. Separate 3/8" and 5/8" heads must be purchased if needed. The tool accepts DeWalt, Milwaukee, and Uponor brand expansion heads. It operates on DeWalt 20V Max lithium ion batteries and comes with two DCB203 batteries and a charger.

• DCE400 PEX Expander Tool
• Three expansion heads: 1/2", 3/4", and 1"
• Two DCB203 20V Max lithium ion batteries
• Battery charger
• PEX expander grease
• Kit box

DeWalt covers this tool with a three-year limited warranty, one year of free service, and a 90-day money-back guarantee.

A: Yes. DeWalt manufactures the DCE400D2, a 20V Max cordless PEX expansion tool designed specifically for expanding PEX-a tubing from 3/8" to 1". The tool operates at 60 strokes per minute with an automatic rotating head and ships as a complete kit with three expansion heads, two batteries, a charger, and grease.

A: The DeWalt DCE400D2 is the fastest PEX expansion tool on the market, running at 60 strokes per minute. It combines speed with an automatic rotating head for even expansion, full trigger actuation for tight-space work, and a 6.75" compact length that fits where manual and larger cordless tools cannot. The rubber overmold grip reduces fatigue during all-day use, and the integrated LED work light improves accuracy in dark areas.