Make it Snappy Tools SD-3 Flat Bottom Counterbores

Snappy Counterbores for a One-Step Hole Countersink bits are great when you're using wood screws with a cone-shaped head. However, if you're using lag screws, lag bolts, washer head screws, T-nuts & more, you need a countersunk hole with a flat bottom to properly seat the screw. That's where the Snappy SD-3 Counterbores are the perfect tool. The 3-flute counterbore creates a pilot hole and counterbores a flat bottomed hole in one step. The drill bits are high speed steel and coated with Titanium Nitride (TiN) to increase wear resistance. Each counterbore has a 1/4" hex Power Bit shank to work with Snappy's Quick Change chuck. Another great feature for woodworkers is the oversized set screw for the counterbore. Rather than fumbling around trying to tighten or loosen the screw, this oversized screw makes adjusting the counterbore a simple task. Sometimes it's the little things that make a big difference. The counterbores are offered in five sizes, or buy the 5-Pc. set with canvas pouch and save! Sizes Include: 1/8" x 3/8" 3/16" x 1/2" 1/4" x 3/4" 5/16" x 1" 3/8" x 1"