7 Pieces Center Drill Bits Set, M2 High Speed Steel 60-Degree Angle Center Drill Bits Kit Countersink Tools for Lathe Metalworking Size 1.0 1.5 2.0 2.5 3.0 4.0 5.0

I needed some drill bits in a hurry for a project here at Farkham Hall Stores in Chepstow; we make specialist pad retaining pins for obsolete motorcycle brake calipers, which involves drilling small holes into a curved stainless steel surface, then countersinking them. The nice price of these bits left me thinking that they may not be up to much. How wrong I was and how pleasantly surprised by the superb job they did on a batch of pins. They look like they are going to last a while but when the time comes, I will certainly be back for more.

They do what they are supposed to, they seem to be of good quality, they have made a fair few center cuts and have not yet dulled. Good price for decent quality.

I was surprised on these- they’re sharp enough for hobby home stuff, I wouldn’t use these for a pro job, fine on milder steel or brass/ ally, etc. in my myford ml7. I doubt they’re much good on 4140 etc

Really accurate drilling centre use without a center punch even on tube. Fantastic . Wish I found them sooner. Excellent price.

These seem good but I am not using them on steel.

Great value for money

I use my lathe to drill out my pen making wood and acrylic blanks. The center bits are great for finding the rotational centers of the blanks making drilling out the blanks so much easier. They are imperial sizes which is okay for me as a lot of pen kits require imperial drills to drill out ready to accept the brass tubes.

Not used yet bought for drilling starter/ pilot holes.

Já usei algumas, funcionam perfeitamente.

Come descrizione ottima qualità

aller doucement avec les petits diametre autrement correct

Für jeden Materialdurchmesser ist was dabei.

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