MALAYAS6pcs 90 Degree 3 Flute 6.3-20.5mm HSS Countersink Drill Bit Titanium Coated Chamfer Cutter End Mill Cutting Tool Set

This set of 6 HSS 3 flute countersink bits comprises of 20.5mm, 16.5mm, 12.4mm, 10.4mm, 8.3mm and 6.3mm, each with a titanium coating, arrived in good condition in a clear grip seal polythene bag. While they don't come in a case it would be easy to make a wooden holder.I've used these for a couple of weeks and they seem to be ok with softwood, hardwood ply and 3mm acrylic sheet. I do feel however that after only a few uses they have become slightly dull but they are still very useable. With pine I'm getting some slight tearout but have had no problems with hardwood ply or acrylic. There has been no wood burning with these bits using my Bosch cordless drill. I think if these were used on metal after a while they would become too dull to use. For my use they work fine and for the price I think they are good value for money.

Bought to use the 2 or 3 smaller sizes to deep countersink screw heads into skirtings and floorboards so they can be concealed with filler. Work a treat; be careful - they cut fast at slow speed (18V combi drill) with only light pressure in ply and oak. Side-tracked by having to re-hang an old door where, long ago, over-size screws were used and the hinges were deep recessed to reduce the effect of the proud screw heads. Enlarging the countersinks in the hinges with the 10mm bit allows the heads of new, longer, screws to sit flush.The bits cut beautiful clean countersinks quickly and easily with no chatter (at low speed) and the two I've used show no sign of wear or losing their edge. Came in a plastic bag inside a padded envelope - I'd have happily paid a few pounds more for a set in robust case with a custom interior (plastic foam); even a basic thermoformed pack would be better than nothing. I saw the same thing in a tin case but was put off by the crude design and bad reviews of the case.A dimensioned photo in the product details is always helpful - especially if you need to make your own case. Will buy again when/if these lose their edge.

The Hakkin Countersink Mill Drill bits are the perfect tool for when you need to hide screw heads beneath the surface for a smooth finish.Each bit is made from HSS Steel and has a Titanium coating which helps to reduce the friction between the cutter and the material you are cutting.There are 6 pieces to the set starting with the smallest diameter cutter of 6.3mm then increasing to 8.3mm, 10.4mm, 12.4mm, 16.5mm up to the largest which is 20.5mm. All have a round shank to fit any drill, with the length of the shank deceasing a little as you move down in diameter size.So far, I have only used the bits to countersink some screws into some plywood, but I am pretty confident that you would be able to use them on plastic or some thin aluminium sheet (possibly some thin gauge steel).***** In The Box *****1 x 6.3MM Cutter (6.3mm x 5mm x 37mm)1 x 8.3MM Cutter (8.3mm x 6mm x 40mm)1 x 10.4MM Cutter (10.4mm x 6mm x 39mm)1 x 12.4MM Cutter (12.4mm x 10mm x 46mm)1 x 16.5MM Cutter (16.5mm x 10mm x 47mm)1 x 20.5MM Cutter (20.mm x 10mm x 47mm)***** Conclusion *****For £8, I think this is a great little addition to your tool box, as it makes countersinking screws extremely quick and easy. It is far easier than using a slightly larger drill bit to countersink a screw.The bits have a nice chunky, solid feel to them, a nice sharp edge and do not feel like they are cheaply made.I would happily buy them again.

Good selection of sizes and with 3 flute I thought that I would get a neat finish to the countersink. Initially, the ones I used cut well but after just a few countersinks were made they blunted and started to make a chattered finish. Might be alright for soft/hardwood but I don't think up to metalworking

Used one of them once so far and was happy with the result. Removed material effectively and cleanly. Only designated four star because I haven’t used them all yet for long enough to warrant further confidence. Time and usage will tell.

The item was as expected came quickly and works very well.

Bought for my husband and he seems very happy with them.

quality