Will it crimp pex to copper?

If you are asking if it will crimp PEX to copper pipe, then no, it will not. There is an adapter that you sweat onto copper pipe that has a PEX fitting on the other end. Search for pex to copper fitting.

Will this tool crimp 4/0 wire splices?

This tool would crimp anything that would fit in the jaws. As far as the size handling of the crimp in the jaws on large copper cables I have not tried that as of yet and could not guarantee it to fit. Thank you for you question on our products.

Is this tool for 3/4 pex ?

Fits PEX crimp ring sizes 3/8 in., 1/2 in., 3/4 in., 1 in.

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RYOBIP661 18-Volt ONE+ PEX Crimp Ring Press Tool (Tool Only)

RYOBIP661 18-Volt ONE+ PEX Crimp Ring Press Tool (Tool Only)

Product ID: 146534841

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Details

Brand
RYOBI
Color
Green and Grey
Item Weight
4.5 Pounds
Product Dimensions
14"L x 5"W
Handle Material
black green

🔋18V ONE+ battery compatible

⚙️Precision PEX crimping with included dies

🛠️Lightweight 4.5 lbs for all-day use

Description

⚡ Crimp with confidence—power, precision, and portability in one sleek tool!

ERGONOMIC GRIP - Textured handle ensures a secure hold, reducing fatigue during extended professional use.
COMPLETE PRO KIT - Includes Go/No Go gauge, belt clip, press die inserts, and pouch for seamless plumbing installs.
COMPACT DURABLE - 14" length and 4.5 lbs weight balance power and comfort for precision crimping anywhere.
CERTIFIED LIKE NEW - Refurbished and rigorously tested to perform like a brand-new tool—quality you can trust.
POWER MEETS PORTABILITY - Cordless 18-Volt ONE+ system lets you move freely on any job site without compromise.

The RYOBIP661 is a refurbished 18-Volt ONE+ cordless PEX crimp ring press tool designed for professional plumbing installations. Weighing just 4.5 pounds and featuring a textured ergonomic grip, it offers precision crimping with included die inserts and a Go/No Go gauge. Tested and certified to perform like new, it comes with essential accessories and fits seamlessly into the Ryobi ONE+ battery ecosystem for ultimate job site freedom.

Specifications

Brand	RYOBI
Color	Green and Grey
Item Weight	4.5 Pounds
Product Dimensions	14"L x 5"W
Handle Material	black, green
Grip Type	Textured
UPC	033287177608
Manufacturer	Ryobi
Part Number	1003991860
Item Weight	4.5 pounds
Item model number	#P661
Item Package Quantity	1
Usage	Plumbing installations, Professional use
Included Components	Go/No Go Gauge, Belt Clip, Press Die Inserts, and Pouch
Batteries Included?	No
Batteries Required?	No

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

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