Chuck: The chuck is the front end where you insert and secure your drill bit. Most drill/drivers have a keyless, ½-inch ...

These countersinks bits have a hole in the center that often allows for depth stop and a smaller diameter (pilot) drill bit. They can drill the initial hole and counterbore it.

Titex Precision Cutting Tools (www.titex.com) says its XD deep-drilling technology drills holes up to 30 times diameter and at speeds to six-times faster than other technologies. A coolant-fed XD ...

Drill Pilot Holes. A pilot hole works in conjunction with a screw-shank clearance hole. ... Combination countersink bits come in various screw sizes (typically 4, 6, 8, and 10) ...

Ryobi’s 300-Piece Drill and Drive Kit and 95-Piece Drill and Impact Drive Kit are the best drill bit sets we’ve found in years of testing.