This is a fast and to get power to run a vacuum or a recover machine.No running extension cords, or finding a place to plug in. The place to plug in is on the unit to youCompatibility: Fits for residential hvac ,Commercial HVAC/R WorkReliable Accessories to Replace Extra Long Extension Cords: It's the HVAC maintenance crew's We love it instead of running 100+ feet of cord, pull power from a disconnect box, to get the .It has real ground wire and alligator clip of high quality material, which guarantees our safety when using it. The alligator clips are sturdy and have a lot of tension to hold the wires tightly.Highly suggest, you understand how to test for power and determine what voltage you are dealing with, before purchasing this item. It can easily harm you or your equipment.Use with hvac gauges,hvac vacuum pump, hvac tools clearance, hvac hoses, and other hvac tools.Colour:As ShownMaterial:plasticPackage Contents:1 x HVAC Adaptor CordOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.