what diameter grease tubes fit? The tubes I bought at TSC are too large to fit.

I guess I never knew they made more than the small and large. That being said their maybe different sizes, but make sure you put the end of the grease container that has the pull tab in last. That's the only way I figure a tube would be too big. Other than that, it takes the common size tube that I gave only ever used

Will milwaukee 2646-21ct m18 cordless 2-speed grease gun kit accept a lock and lube tip?

A BIG YES!!!! I'm using one now . the gun has a lot of pressure .

worth buying especially if you own equipment

I don't know what to tell you. It's like any other battery grease gun I've ever had (Lincoln-had 3) as far as carrying them. Only this one just keeps going and going. Batteries last forever. I ordered my first Milwaukee set in 2009 and I kid you not, the batteries are all still working fine. After having Dewalt junk before that and replacing batteries yearly or sooner this seems like a miracle. I have two and have never had a problem. I bought a drill, a saber saw, and an impact in 09. Another drill later. A flashlight for the 18v bat. And two of these. Not one problem with any of them.

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Description

⚡ Grease smarter, not harder — power and precision in your hands!

SMART VERSATILITY - 2-speed design toggles between max pressure and max flow for any task
PRECISION GREASING - Patent-pending pre-set grease counter ensures exact grease amounts every time
ERGONOMIC EFFICIENCY - Lock-on/lock-off trigger and shoulder strap reduce fatigue during long jobs
UNMATCHED POWER DELIVERY - Industry-leading 10,000 PSI max pressure for heavy-duty performance
ULTIMATE REACH FLEXIBILITY - 48-inch flexible hose conquers the toughest, tightest fittings

The Milwaukee 2646-20 M18 2-Speed Grease Gun is a cordless, high-performance tool delivering up to 10,000 PSI with a flexible 48" hose for hard-to-access fittings. Featuring a patent-pending pre-set grease counter dial, lock-on/lock-off trigger, and 2-speed operation, it offers unmatched precision and user convenience. Powered by the M18 REDLITHIUM battery system, it’s designed for professionals demanding power, accuracy, and fatigue-free operation.

Specifications

Manufacturer	Builders World Wholesale Distribution
Part Number	2646-20
Item Weight	9.28 pounds
Product Dimensions	3.8 x 19.7 x 9.2 inches
Item model number	2646-20
Is Discontinued By Manufacturer	No
Color	Red
Material	metal
Power Source	Cordless
Voltage	18 Volts
Item Package Quantity	1
Number Of Pieces	1
Measurement System	Metric
Included Components	Hand Caulking Guns
Batteries Included?	No
Batteries Required?	No
Battery Cell Type	Lithium Ion
Warranty Description	Tool warranty : 5 Years

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