I bought the 3 core connectors for my smart strings and I now have them on my new flexstrips. Buy more than you need. I keep a spare SSC and also have a connector that has alligator clops on the end so I can connect up to a new string or strip and test without having to do any soldering. Send Ray and email and ask for a consolidated quote. That way he will give you cheaper shipping and a paypal address to use and you won't get it with a foreign transaction fee on your credit card. Last year I place my first order thru the alibaba site and ended up with problems getting the credit card approved and then got hit with a 3% foreign transaction fee on top of everything else. Be sure to get extra end caps if you are going to cut your strips and maybe a little extra tubing. If you ask nice he may just throw them in for no charge. I also bought the tester, but have yet to use it. I also put a connector on it so I could hook lights to it with no soldering or using a screwdriver. The connectors are cheap. You may also want to buy some of the 3 wire cord if you are going to cut strips or need to make them go around obstacles. It is very flexible and matches the wire used on the strips as sent to you. Only comes in 100meter minimum, but nice to have on hand. You will see lots of folks searching for wire to use that they can buy locally but it seems to be difficult to find.