10 PCS 1.0 mm Tungsten Steel Carbide End Mill Engraving Bits Milling Machine Router Bits for Glass PVC MDF Wood CNC Machine Engraving Carving

Good and solid. Used to make holes on a acrylic sheet for project, with a hand drill. Need to be gentle with them else they will snap, take your time and they will last.

Bought for CNC machining in wood. At only 0.5mm they are going to be very easy to break. I have to wind back the feed and depth of any cut to around 30% to 50% of that I would normally use so not to break them. The other thing to say is if using a cheap drill,router etc. Unless the spindle is very well balanced and very true to the centre then these will break at almost any speed. I first used a very cheap hand router and this happened constantly. But this is all to be expected for such a precision item.

Done a few engraving jobs with these and not one has broken yet. Much more sturdy compared to the 20,30 degree bits I've had in the past.

At this price point, & for occasional use, I thought these would suffice. I have got to say they have exceeded my expectations. A good buy from my point of view.

I’ve been getting some good results with these In my CNC router, just don’t push them too hard, keep the feeds and speeds down and they will not break.

Absolutely rubbish I used at 0.2mm per pass in soft pine and it snapped with seconds of starting

Excellent drill bits great value for money highly recommended

Immediately broke two in quick succession when used with hardwood.