The fast answer before the full tool notes
100-Piece Kit ($39.99)
Covers 3-4 medium projects. All four AWG sizes included. Lowest risk if you're trying SolderStick for the first time.
500-Piece Kit ($99.99)
$0.20/connector vs $0.50 for the 50-piece. If you wire anything regularly, this pays for itself by the second project.
50-Piece Kit ($24.99)
Enough for one focused job. Good entry point, but most buyers wish they'd gone bigger.
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Which size makes sense for your job
50 pcs if you only need one focused repair.
100 pcs if you want the safest first purchase for normal DIY use. It covers multiple jobs without forcing you into the largest box.
500 pcs if you already know you will use these regularly and want the lowest cost per connector.
Do I really need 500 pieces? That feels like overkill.
Amazon sells solder seal connector kits for less. What's different?
Are all four gauge sizes included, or do I get mostly one color?
Most buyers should start with the 100-piece kit.
IP67 connector line when installed correctly · CE certified connector line
Kits from $24.99terms shown before purchase
Get the 100-Piece KitShipping, availability, and return terms are confirmed on the SolderStick checkout page before purchase.
What owners say after the first job
“Bought the 100-piece kit for a boat rewiring job. Used about 40 connectors. Came back three months later and the connections were bone dry - no corrosion at all. Already ordered the 500-piece for the shop.”
“I'm an HVAC tech and I go through these weekly. The 250-piece kit lasts me about two months. Per-connector cost at this size makes it cheaper than buying crimp connectors and heat shrink separately.”
“Started with the 50-piece. Ran out halfway through wiring my utility trailer and had to wait three days for more. Get the 250 or 500 if you have more than one project. Lesson learned.”
“Used the cheap Amazon ones for a year. Half my landscape lighting connections failed after one winter. Switched to SolderStick and every connection from last spring is still perfect. The solder ring is visibly thicker.”
Questions people ask before switching
What heat source do I need?
A standard heat gun (available for $15-25 at any hardware store) or a butane torch. The solder ring melts at 280F and the polyolefin starts shrinking at 176F. Most heat guns reach both temperatures on their low setting. Rotate the connector while applying heat for even coverage.
Can I use these outdoors where they'll be exposed to rain and standing water?
Yes. IP67 rated means the connector is sealed against dust ingress and can survive temporary submersion in water up to 1 meter. We use them on boat wiring, landscape lighting, and outdoor security cameras without any additional waterproofing.
How long do unused connectors last in the bag?
10-year shelf life in the sealed packaging. The solder ring and polyolefin tubing don't degrade in storage. Buy the 500-piece and use them over multiple years without any performance loss.
What's the return policy if the kit doesn't work for my application?
30-day money-back guarantee, no questions. Free return shipping. If the connectors don't perform on your specific wire type or gauge, you get a full refund.
Can I mix wire types (stranded to solid) with these connectors?
Yes. The solder ring flows around both stranded and solid copper wire. We've tested stranded-to-stranded, solid-to-solid, and stranded-to-solid connections. All held. Match the AWG color to the larger wire gauge in the connection.
Product terms, without guesswork
Try any kit size for 30 days. Use as many connectors as you want on real projects. If you're not satisfied with the connection quality, return the remaining connectors for a full refund. Free return shipping included.