How can I heat these wire connectors? Please list the daily tools could be used, I am not so professional.

A heat gun works best for these, there is no solder in them either, the metal is solid and has to be crimped mechanically before the outer sleeve is heated up to shrink it onto the insulation.

hi there. Can I use a lighter?

Yes, you could, and you have to be very careful with the lighter, it might melt the solder. A heat gun is much better.

Can I use these to connect up 12v gardens lights, ,are they ok and safe to use in the garden?

They are crimp connectors, but the idea is that the plastic surround is heat-shrinked onto the wires & forms a waterproof seal. I think it’ll be fine as long as the wires aren’t too thin.

Are these connectors suitable for 220V?

Sure - the question is more what current.... and the size of the wire that you can fit in will dictate that.

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Heat Shrink Wire Connector Butt Terminals Kit, 200PCS Crimp Connectors Waterproof Insulated Electrical Terminals Marine Automotive Cable Electrapick (3 Colors / 3 Sizes)

Product ID: 90081776

Details

Colour
Yellow Blue
Connector type
Quick Connect
Contact material
Copper
Insulation material
Polyolefin
Terminal
Butt Terminal

🌈3 colors & sizes

🔥Heat shrink waterproof seal

🔧200pcs versatile kit

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A$48

Duties & taxes included

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Sold byAmazon AustraliaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔥 Seal the deal with every connection — stay leakproof, stay ahead!

BUILT TO LAST - Meltable adhesive lining prevents moisture damage and ensures long-term stability.
VERSATILE POWERHOUSE - Perfect for marine, automotive, household, and electronics wiring needs.
NEXT LEVEL DURABILITY - Tin-plated copper with dual-layer polyolefin tubing for unmatched corrosion resistance.
EFFORTLESS INSTALLATION - Insert, crimp, and heat—secure, waterproof connections in minutes.
ALL IN ONE WIRING SOLUTION - 200 premium connectors in 3 sizes and colors to fit every project.

The ELECTRAPICK 200pcs Heat Shrink Wire Connector Butt Terminals Kit offers a comprehensive, color-coded selection of crimp connectors in three sizes (AWG 12-10, 16-14, 22-18). Crafted from tin-plated copper and insulated with dual-layer polyolefin tubing, these connectors provide superior conductivity, moisture resistance, and durability. Designed for quick, secure, and waterproof connections, this kit is ideal for professional and DIY electrical projects across automotive, marine, and household applications.

Specifications

ASIN	B07GDHXN21
Best Sellers Rank	19,388 in DIY & Tools ( See Top 100 in DIY & Tools ) 92 in Electrical Terminals & Kits
Brand	ELECTRAPICK
Colour	Yellow, Blue, Red
Connector Type	Quick Connect
Contact Material	Copper
Customer Reviews	4.5 4.5 out of 5 stars (1,852)
Insulation Material Type	Polyolefin
Manufacturer	ELECTRAPICK
Manufacturer Part Number	BT-200
Material	Copper
Model Number	BT-200
Temperature Rating	105 degree celsius
Terminal	Butt Terminal
UPC	706973709734

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