A great value set of countersunk bit and embedded bit.
Drill for drilling pilot holes for screws (3mm), countersinking (9mm), and making wooden plugs (9mm).
Please use with impact drivers and electric drills. 6.35mm hexagonal shaft
Material 1: Shaft: High speed steel
Material 2: Blade: High speed steel
Caution 1: *Do not use with high-speed power tools (over 3,000 rpm).
