Infinity Tools 7件式錐形鑽頭與沉頭鑽套組

I picked these up for a walnut side table build and the pilot holes came out dead center every time, no walking on the brass screws. The countersinks sit flush enough that I barely had to sand after plugging.

The tapered bits cut clean countersinks in my walnut without any tear-out, which regular drywall-screw countersinks never managed. Five bits plus the stop collar gave me everything I needed for a whole set of chairs. Wish I'd switched to these years ago.

Picked these up specifically because my old countersink chattered on brass screws, and the taper on these actually matches the screw heads so the plug sits flush. Cut clean countersinks in cherry and walnut without any burning.