Make it Snappy Tools 直式錐形沉頭鑽替換鑽頭，2件。

These drop right into my existing countersink body and cut clean pilot holes and countersinks in one pass through pine and oak. Two spares in the pack means I'm not stuck mid-project when one gets dull.

Didn't realize how much time I was wasting switching between a pilot bit and a separate countersink until I tried these. Two bits in one step, and the straight shanks line up perfectly with my modern screws. The holes came out clean on the first try.

Drilling pilot holes and countersinks in one pass saved me so much time on my last cabinet build, and the straight shank stays true in hardwood without wandering. Two bits in the pack means I've got a spare when the first one dulls.