Unique Two-Flute Design
Featuring a dual-edge cutting design, these countersink drill bits eliminate chatter and ensure smooth, precise finishes. Compared to single-blade bits, they offer faster cutting, ideal for larger or deeper countersinks.
Upgraded 12-Piece Set
This EZARC countersink drill bit set includes 5pcs Countersink bits (#4
4.5
12 ratings
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I like that the drill bits are straight, not tapered. The tip does not burn like other tapered drill bits I have tried. I like that there are extra drill bits included. I like that the counter sink is sharp and is in contact with the drill bit no matter what you adjust the depth at. The other tapered drill bits have more cutting edges for the countersink part, but when you adjust for a shallow hole, the countersink surface does not make contact with the drill bit, causing a bunch up of wood chips. I highly recommend these drill bits and they are reasonably priced too.
R
Ronald · August 7, 2026
Once again amazing bit off kit, very sharp. Would give 6 stars but not possible.