Air drills; drill bits for use in boring concrete; drills for use in boring concrete; center drill bits being parts of machines; center drills; diamond drill bits; drill bits, other than hand-held tools; polycrystalline diamond compact [PDC] drill bits for drilling machines; step drill bits for electrical drills; drills for machines and tools; centering drilling bits being parts of machines; drilling bits being parts of machines; pneumatic drills, hand-held; electrical drills, hand-held; cemented carbide drills; electrical drills; electric hand drills; drill bits for construction machines and apparatus for use in boring concrete; drills as being power tools; drill bits for electrical drills for use in boring wooden boards and plywood