For cables from 9mm to 12mm is available. By rotating the caps, the sealing ring and the cable are in close contact and completely sealed. While achieving the purpose of waterproofing, reducing the number of accessories is more environmentally friendly. The junction box can be used safely in the sun or rain. Flame retardant, dustproof and shockproof. For example. for outdoor, garden, outdoor, LED displays, LED tunnel lights, LED street lights, LEDs in outdoor displays, LED garden lights, etc. 𝐅𝐀𝐂𝐈𝐋𝐄: The screw-on nut changes the inner diameter of the washer by turning it. It fits perfectly with threads from 9mm to 12mm. There is no need to change parts.