Step Drills and Countersinks

Step drills, countersinks and deburring tools. Used to drill holes of several diameters in thin sheet and to clean up the edges of holes.

Countersink Bit, 90°, 10.4 mmHSS three-flute 90° countersink; diameter 10.4 mm. Cuts clean seats for countersunk screws and removes burrs.
Countersink Bit, 90°, 12.4 mmHSS three-flute 90° countersink; diameter 12.4 mm. Cuts clean seats for countersunk screws and removes burrs.
Countersink Bit, 90°, 16.5 mmHSS three-flute 90° countersink; diameter 16.5 mm. Cuts clean seats for countersunk screws and removes burrs.
Countersink Bit, 90°, 20.5 mmHSS three-flute 90° countersink; diameter 20.5 mm. Cuts clean seats for countersunk screws and removes burrs.
Countersink Bit, 90°, 6.3 mmHSS three-flute 90° countersink; diameter 6.3 mm. Cuts clean seats for countersunk screws and removes burrs.
Countersink Bit, 90°, 8.3 mmHSS three-flute 90° countersink; diameter 8.3 mm. Cuts clean seats for countersunk screws and removes burrs.
Step Drill Bit, 4-12 mmHSS step drill bit; range 4-12 mm. Drills burr-free holes of many sizes in thin sheet with one bit.
Step Drill Bit, 4-20 mmHSS step drill bit; range 4-20 mm. Drills burr-free holes of many sizes in thin sheet with one bit.
Step Drill Bit, 4-32 mmHSS step drill bit; range 4-32 mm. Drills burr-free holes of many sizes in thin sheet with one bit.
Step Drill Bit, 6-38 mmHSS step drill bit; range 6-38 mm. Drills burr-free holes of many sizes in thin sheet with one bit.