Bosch SP515 5-Piece Hex Shank Countersink Drill Bit Set #6#8#10#12

I picked up these bits for a particular project with poplar that needed a countersink. Admittedly, this is the first countersink bit I've worked with. Worked with very little resistance and made a perfectly sized hole for my #8 screws. There was a little bit of cleanup needed around the hole before paint but otherwise, worked nicely. I can't speak to how well these will hold up or in harder woods but for an occasional project or someone just getting started, they work well. I only wish that they'd include a storage case but at this price, it's hard to complain.

As described

Overall I think Bosch does a good job with their products and these work well but be careful with them. Was using the #6 bit to countersink some screws into a pressure treated 4x4 to make a circular saw jig for joinery and the bit broke working on the second hole. I figured that’s what I get for using it on a big piece of pressure treated lumber. The real frustration I’ve had has been after replacing the bit it doesn’t want to adjust or work the same as when it was bosch’s bit. Overall cool piece.

Works like they say

High quality machining. It allows drilling of the shank and the countersink, but not the pilot hole. I wish someone would make a step drill with the first section a pilot diameter and the second section the shank diameter.

EXCELENTE

Just what I needed

I had finally worn out my 40+ year old drill/countersink bits and picked these up. They are working great, and appear that they may well last longer than I will.

Great product, would be nice if you could buy replacement drill bits to fit though

Tried a few different brands before I found these Bosch versions, fantastic tools and metric

Fa il suo lavoro per uso hobbistico

Exactement ce que je recherchais. Faire un chanfreins pour les vis, tout fonctionne parfaitement..

Not what you would expect from Bosch Two #8 countersinks supplied,one just fitted with a smaller drill in the larger hole so it runs eccentric Rather buy a cheap Chinese product and you might get the same or even better