This universal float switch kit can be used with most protein skimmers. The holder is machined from high quality PVC and includes a high quality Madison Sub Miniature Normally Open Float Switch with abrasion proof wire covering over the cable. Also included are a set of male and female quick connect plugs that can be removed from the switch cable for easy installation. A 6 foot length of insulated 2 conductor wire is included for the connection between the switch and your controller. *Custom lengths are available upon request.* Simply remove the bushing from the top of the float switch stem and slip the switch holder through the vent hole on the skimmer. Then replace the bushing to hold it in place. A drop of silicone can be used inside the vent hole to permanently affix the holder in the lid but that is optional.The attach the quick connect plug to the two exposed wires using a small screw driver to tighten the screws. The switch can be adjusted up and down and the offset mount can be rotated left or right to clear the side of the collection cup. Note that flat rate shipping is via the USPS and is limited to the continental US. International shipping rates will vary. Please contact us for more information on international shipping options. be sure to include your full ship to address when inquiring about international shipping rates.