The 12 AWG, black, 25' Century Wire and Cable Pro Glo SJTW Triple-Tap Extension Cord with CGM is made of soft-drawn, bunch-stranded 100% copper conductors for added flexibility and is molded with large strain reliefs at both ends for enhanced durability. The extension cord features a triple-tap connector, providing three standard 15A-125V outlets. This 25' extension cord is manufactured with cold-weather insulating and jacketing compounds.

The extension cord provides continuous current and ground monitoring, also known as CGM. The male plug has a built-in amber-neon light, which indicates that there is power in the cord and outlet, while the triple-tap female connector has a built-in green-neon light, which indicates ground continuity.

3-Pin Male to Triple-Tap Female    Continuous Current and Ground Monitoring

100% copper conductors

Cold-weather insulating and jacketing compounds

Supports up to 300 VAC

Up to 15A current draw

Suitable for indoors and outdoors

Water-resistant thermoplastic jacket

Related Questions and Answers

Q: 1. Is it possible to mount a Canon Extender EF 1.4X iii to THIS Canon Extension Tube EF 25 ii TO the Canon 100mm f/2.8L Macro?

A: Yes, that should work. I would recommend taking a look at the Canon web-site. They will have a compatibility table for the extender.

Q: 2. With the canon 50mm macro lens, what is the greatest magnification achievable?

A: I have both the EF 12 II and the EF25II. I tend to be happier with the EF 12 II on my 100mm macro. I think it is a matter of preference for the work at hand. Hope this is of some help. Good Luck, m

Q: 3. Can I use this with the EOS R and the EF 100mm 2.8? As the lense is already adapted to the camera.

A: Yes.

Q: 4. Where is this Canon extension tube manufactured?

A: Country of origin is Japan.

Q: 5. Will this EF 25 work well on the Canon 300mm telephoto lens?

A: It will work, but the effectiveness of an extension tube is in direct proportion to the focal length of the lens you are using it with. A 25 mm tube on a 50 mm lens is very dramatic. On a 100 mm lens it is still very noticeable but the magnification is not as extreme as with a shorter lens. I am not sure how much closer you will be able to focus with a 300 mm lens. It will change your minimum distance but I don't know if it will give you what you are looking for. You can also combine extension tubes to get closer focusing on longer lenses.

Q: 6. Will this extension tube allow EF-S lenses to be used on EF-mount cameras, such as the new Blackmagic Design URSA Mini EF mount? I have a collection of EF-S lenses for my Canon 70D and was wondering if I'd be able to get any use out of them on an EF-mount camera such as that. Thanks

A: I don't have any EF-S lenses, but from what I understand the white dot indicates that you can mount the tube to such lenses. BUT, even if you can then mount the tube onto an EF body, you will lose infinity focus. What you gain with extension tunes is the ability to focus a lens closer for macro work. This changes the normal distance focusing ability of any lens. So I guess the answer is yes and no. Yes it should mount between an EF-S lens and and EF body, but no if you expect this to turn your EF-S lens into an EF lens.

Q: 7. Can I use this to connect a 1.4x III TC and 2x III TC?

A: Yes, Canon Extension Tube EF 12 II can be used in combination with your lens and Extender. Please be aware of slow focus due to the Canon extension tube.

Q: 8. Is it compatible with third party lenses? For example Tamron or Sigma lenses?

A: I use this often with a Sigma 150-600mm Contemporary Lens to shoot dragonflies and it works fine. As others have mentioned infinity becomes a lot closer. A gent at a local pond was taken aback when I told him I could not take a picture of the snapping turtle on the beaver lodge because it was too far away. I took off the EF 25 II, got the shot of the turtle, put it back on and got back to my dragonfly hunting.

Q: 9. Does this work well with the canon 24-70mm 2.8 or the 70-200 mm 2.8?

A: All extension tubes are plain metal rings with electronics contact. It works with all lens.

Q: 10. Is the barrel of the tube metal? Or just the mounts.

A: The barrel of the Canon Extension Tube EF 25 II is not metal .