3-6mm Countersink Drill Bit Set for Soft Material 4pcs with Hex Key High Quality

Material: Carbon steel(drill bit), 45# steel(countersink) Countersink Flute: 5. Countersink Drill Bit Carpentry Woodworking Boring Tool Round Shank With Hex Key(4pcs,3-6mm). Drill bit is made from carbon steel and countersink is made from good quality 45# steel which ensures a long service life.

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