You'll probably want to buy some 3-4mm heat shrink tubing as well. The 6mm fits around the connector, but it doesn't shrink far enough to grab the wire. I've used 5mm in the past, but you'll still want something smaller.
very nice colour Great shrink tubing at a very low price. The 4 mm size works great for covering splices on motor and ESC wires and for covering the solder connection to gold bullet connectors. I ordered both red and black. It shrinks easily and looks and works just like the expensive products from local sources