Chiloskit 5pcs M3-M8 Pilot Slotting Counterbore Mould End Mill Cutter Solid Slot Countersink End Mill Drill Bit
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This set contains 5 pieces of M3 M4 M5 M6 M8 HSS counterbore for socket head cap screws, all in different sizes and packed separately in a plastic tube. I used mine on aluminum and it worked just fine.
Selected User Reviews For Chiloskit 5pcs M3-M8 Pilot Slotting Counterbore Mould End Mill Cutter Solid Slot Countersink End Mill Drill Bit
China set for sale at a low price. In my opinion, other sizes are better than the smaller ones.
The items were used and damaged so I would be super happy if I were sent new ones. It appears that the remaining tools are good. A damaged tool kept me from recommending these, but I would recommend them, nonetheless.
Several extruded v-shaped profiles can be counterbored with these without problems 3D printer frames mounted on rails.
Counterboring a steel scope rail was a breeze with this tool. In addition, they are exceptionally sharp, cutting through steel with ease.
It's all there.
Thank you for the good quality at a fair price.