new to the forums, an hate to be critical right off , but ,dieselminded, i used those taps on my fleet a lot , and they are great , and rarely break stands , but , they are far from waterproof , just something to consider . i now use heat shrink self-soldering butt spices with a waterproof resin that oozes out when heated, and they make step-down sizes too , we get them from imperial. they have a solder ring in them that melts with use of heat guns and the resin seals them off from moisture.