I bought the 0.6mm. It melts very fast (has lead), flows well, and produces a nice electrical connection for my small electronics projects.
I don't think you could go wrong with this if using it for electronics. Be sure to use a fume extractor with this. It produces quite a bit of fumes (lots of flux), plus it has lead in it.
While it is advertised for jewelry, I don't know if this should be used for jewelry. I don't know if the 60-40 composition is strong enough for jewelry and I don't know if I want anything with lead in my jewelry. I'm not an expert on these matters though.
All in all. A good deal for electronics uses.
I think there should be an option in the list for one of each size. I would have liked that a lot better.
60-40 锡铅玫瑰核心焊线 0.6mm 0.11lbs 适用于电焊、电子设备、仪表线、玩具、彩色玻璃、首饰（2 件装）
新品(1)，起始价： ￥80.41 + ￥37.99配送
- Rosin 核心焊接器：rosin 核心焊接线专为电气维修而设计，如收音机、电视、VCR、立体声、电线、电机、电路板和其他电子设备、仪式电线、玩具、染色玻璃、珠宝等；不适合管道。
- 焊接线成分：60% 锡和40% 铅。熔点190°C/374°F，快速简单，松木芯，2% 的通量，无需额外流动
- 优质焊接线：流畅，均匀加热，易于使用。 在电导性和热导性方面具有良好的焊接能力；使用焊接线卷轴，可快速完成焊接。
- 包装内容：0.6mm.50G X 2，非常适合初学者使用
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美国亚马逊： 63 条评论
Great ELECTRICAL solder, not sure I would use it for jewelry?2019年7月10日 - 已在美国亚马逊上发表
soldering for the diy guys2019年4月11日 - 已在美国亚马逊上发表
This is one of the best quality solder I have ever used! It really is amazing what a difference it can make to your soldering. Oh and yes, this has lead in it, WHICH IS A GOOD THING!! You will be just fine using this stuff, just probably shouldn't eat it but you'll be fine, lol. The quality flux inside makes a world of difference as well, I rarely need to reach for my flux pen anymore. I got this and was able to repair my remote for my car alarm instantly because the bracket holding the battery kept coming loose. my soldering skills isn't that great but who cares, it got the job done. Great stuff, you won't be disappointed
Easy to use.2019年4月17日 - 已在美国亚马逊上发表
You get two gauges of solder, one really fine and the other a bit thicker. The really fine size melts really easily, so you can get the joint started quickly. The thicker roll lays down solder more quickly, making a solid joint a breeze. Rosin core in both helps prevent cold solder joints. Great product. The only complaint is that they could have given more on each roll. Not chintzy, exactly, but certainly not generous. that's why only 4 stars for value. the quality of the solder is not at all lacking.
nice starter kit for amateurs and beginners.2019年5月3日 - 已在美国亚马逊上发表
Prompt shipping, excellent/secure packaging/Good quality product. Two pack of different size depending on my needs. rosin core were used for electronics and gauge wires were for toys and tools. It's not for copper pipes in plumbing, Perfect as described by the seller. Price is very competitive. Can’t ask for anything more :-) It's a nice starter kit for amateurs and beginners.