TCT Hole Saw, 35mm Carbide Bit with Pilot Drill, Cutter for Hard Metal, Stainless Steel, Mild Steel, Aluminium Alloy, Copper, Iron, Plastic and Fiberglass

Solid drill bit, will blunt easily on metal if run on high speed! Run slow and steady for metal on anything else it just eats through nicely

Does the job well. If cutting heavy plate really do follow the advice and start with a low speed, I managed to snap the pilot drill by not doing this (my error), fortunately a standard M6 drill will replace it although it's about 2x the length. I was cutting 18mm holes in 10mm steel plate using a 500w hand drill and it managed the job well, lubricating or cutting oil essential for thicker materials but I was impressed but how well the holes were cut and how clean they were.

Works well, supplied with an appropriate Allen key. No ejector spring as shown in the display picture. Not that it really matters, they are usually too weak to work properly. I used it to cut 5mm acrylic sheet, went through like a dream, no breakout or cracking. Pleased with the result, works better on Perspex than bi-metal hole saws.

Cuts through sheet steel and aluminium leaving very tidy, clean edges.

Did the job

Really weak, lost a tooth on the second use, then lost literally all the teeth on the 4th or 5th use. Not durable at all.

These hole saws last for ages as long as you don’t abuse them, really tough. Ideal for cutting through Steel as long as you use coolant (remember coolant isn’t the same as lubricant). If you don’t have any coolant, just use water, and then spray the hole saw with WD40 when finished.

A good quality heavy duty carbide hollow drill for drilling thick steel plate where a magnetic drill and hollow drill won’t suit or is too expensive for a one of hole.