do these fit the JB weld 25ml epoxy tubes?

I don't know about JB Weld. I bought this for 3M Scotch-Weld 08966 Epoxy Adhesive DP420 50mL, DP420, Black

Will they fit adhesive technology JF-311 cartridges?

Tried to look on the site only cartridges I saw were larger than the 25/50ml cartridge these are used for. I would doupt it.

Does this fit 2:1 ratio?

Yes! Good For 1:1 and 2:1 ratio formulas

Where does one purchase the 'needle' tip shown in the sales photo?

Those nozzles with the large round base are available on Amazon ... but they do NOT fit the dual tube Hysol adhesive cartridge. That cartridge requires the end with the flat sides so it will fit onto the outlet and twist-lock into place.

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Adhesive Cartridge Tip for Resin Mixing Gun 50ml Applicator 16 Elements, 3.6 Inch, 1:1 and 2:1 Ratio (20 Pieces)

Product ID: 394693241

Details

Brand
FRIGIIRE
Item form
Paste
Material
Plastic
Special features
High Nozzles
Specific uses for product
Repair

📏3.6 inch length for precise application

♻️50% less adhesive waste

⚙️16-element high-efficiency nozzle

¥4802

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔧 Mix it right, waste less, bond stronger!

BULK PACK ADVANTAGE - 20-pack ensures you’re always ready for your next project without delay
WASTE NOT WANT NOT - Smaller diameter reduces adhesive waste by up to 50%, saving money and materials
UNIVERSAL COMPATIBILITY - Works seamlessly with all B-System 50ml epoxy & adhesive cartridges
VERSATILE BONDING POWER - Ideal for metals, wood, masonry, plastics, rubbers, and PCB mounting
PRECISION MIXING MASTERY - 16-element design ensures flawless 1:1 & 2:1 resin blending every time

The FRIGIIRE Adhesive Cartridge Tip features 20 high-efficiency 16-element nozzles designed for precise mixing of 1:1 and 2:1 resin ratios. At 3.6 inches long, these tips fit all B-System 50ml cartridges, reducing adhesive waste by 50% with a smaller diameter and optimized inner mixing. Perfect for professional bonding across metals, wood, plastics, masonry, rubbers, and PCB applications.

Specifications

ASIN	B07Y1DGHZB
Best Sellers Rank	#30,594 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #9 in Glue Gun Accessories
Brand Name	FRIGIIRE
Color	green
Compatible Material	Wood
Container Type	Cartridge
Item Form	Paste
Item Package Quantity	1
Item Weight	0.01 Ounces
Manufacturer	Good news
Material Type	Plastic
Model	PEG_USK-03JUNE23-B083JKDNRJ
Number of Pieces	20
Other Special Features of the Product	High Efficiency Nozzles Reducing Adhesive Waste by 50%
Part Number	PEG_USK-03JUNE23-B083JKDNRJ
Specific Uses For Product	Repair, Woodworking
UPC	745103917670
Viscosity Level	Low
Volume	50 Milliliters
Water Resistance Level	Not Water Resistant

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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