TEMCo Industrial Hydraulic Knockout Punch TH0004 - Electrical Conduit Hole Cutter Set KO Tool Kit 5 Year Warranty

This is actually my 3rd tool from TEMCo. I’m consistently impressed how they get this quality at the price point. Works just as well as the Greenlee it’s replacing. It’s smooth, cuts clean, and it’s easy to remove the punched out piece the way it bends it. If you need a punch kit, and this one has the sizes you need, you won’t be disappointed.

I actually bought this to use with the Lisle 17350 exhaust pipe expander kit. The stud in this kit fits both sets (Temco and Lisle) perfectly so no compatibility issues there. If you are working with thicker exhaust pipe or especially stainless it can be very hard to expand it manually and this setup works amazingly well. The 9 ton hydraulic capability not only gives you the power you need but it's also alot easier to control how much you're stretching the pipe so you can really get a perfect fit prior to welding anything. I know overall it's not cheap setup at all but it will save you a ton of time and money if you're working with stainless exhaust (which is not cheap either) so I highly recommend it.

This product is great and compared to other manufacturers you cant beat the price. This is an electrician tool so the sizes are for conduit so they aren't true measurements. So the 1/2 inch knock out is 7/8 if you want to know the rest look them up its a standard. If you don't understand this, this isn't the product for you. Stop complaining the sizes are wrong they aren't you just don't understand the product. The bit does pull much faster then others I've used so I do expect it to fail eventually but who knows.

For an economical set up as this, being an experienced electrician for nearly three decades, this is a good product. I was surprised that it came with a step-drill bit (unibit as we call it in the field). It has the cutters that shear the knockout, like the more expensive "GREEN" product, not to knock any name as that is a really good set (experienced electricians will know what I mean there. At any rate, if you are looking for a good product, this is a good one. Comes with more than one size spacer, which I really like about it as well.

Fonctionne très bien, bonne qualité et très satisfait pour le prix payé !