3Pcs 3 Flats Shank Straight Flute Golden & Black Color HSS Step Drill Bit Set

for Metal Sheet Multiple Hole Drilling

1. Step drill bits are perfect for drilling and enlarging multiple-holes in thin sections of sheet metals, pipes, plexiglass, plastics, wood up to a thickness of 5mm.

2. 135° Split Point Tip: increases cutting speed with self-centering and the drills do not run off center.

3. A variety of hole diameters can be drilled using only one tool.

4. The dimension of drilled hole is exact.

5. Two Flute Design: provides longer life and better chip removal.

6. Only for rotary use.

SIZE

L

Steps

D3

D1-D2

MM

MM

4.0-12.00

65,0

5

6,0

4.0-12.00

65,0

9

6,0

4.0-20.00

75,0

9

8,0

4.0-30.00

100,0

14

10,0

6.0-38.00

100,0

12

10,0

6.0-26.75

75,0

8

10,0

4.0-39.00

107,0

13

10,0

6.0-32.00

75,0

8

10,0

5.0-28.00

69,0

7

10,0

6.0-30.50

80,0

9

10,0

6.0-37.00

100,0

12

10,0

6.0-32.00

76,0

9

10,0

6.0-40.00

105,0

16

13,0

6.5-32.5

91,0

12

10,0

SIZE

Drilling range

D1-D2

mm

4.0-12.00

4.0/ 6.0/ 8.0/ 10.0/ 12.0

4.0-12.00

4.0/ 5.0/ 6.0/ 7.0/ 8.0/ 9.0/ 10.0/ 11.0/ 12.0

4.0-20.00

4.0/ 6.0/ 8.0/ 10.0/ 12.0/ 14.0/ 16.0/ 18.0/ 20.0

4.0-30.00

4.0/ 6.0/ 8.0/ 10.0/ 12.0/ 14.0/ 16.0/ 18.0/ 20.0/ 22.0/ 24.0/ 26.0/ 28.0/ 30.0

6.0-38.00

6.0/ 9.0/ 13.0/ 16.0/ 19.0/ 21.0/ 23.0/ 26.0/ 29.0/ 32.0/ 35.0/ 38.0

6.0-26.75

6.0/ 9.0/ 11.4(PG7)/ 14.0(PG9)/ 17.25(PG11)/ 19.0(PG13.5)/ 21.25(PG16)/ 26.75(PG21)

4.0-39.00

4.0/ 6.0/ 12.0/ 15.0/ 18.0/ 21.0/ 24.0/ 27.0/ 30.0/ 33.0/ 36.0/ 39.0

6.0-32.00

6.0/ 9.0/ 11.2(R1/ 8)/ 14.5(R1/ 4)/ 18.2(R3/ 8)/ 22.3(R1/ 2)/ 27.9(R3/4)/ 32.0

5.0-28.00

5.0/ 8.8(G1/8)/ 11.8(G1/4)/ 15.3(G3/8)/ 19.0(G1/2)/ 24.5(G3/4)/ 28.0

6.0-30.50

6.0/ 9.0/ 12.5(PG7)/ 15.2(PG9)/ 18.6(PG11)/ 20.4(PG13.5)/ 22.5(PG16)/ 28.3(PG21)/ 30.5

6.0-37.00

6.0/ 9.0/ 12.5(PG7)/ 15.2(PG9)/ 18.6(PG11)/ 20.4(PG13.5)/ 22.5(PG16)/ 26.0/ 28.3(PG21)/ 30.5/ 34.0/ 37.0(PG29)

6.0-32.00

6.0/ 9.0/ 12.0/ 16.0/ 20.0/ 22.5/ 25.0/ 28.5/ 32.0

6.0-40.00

6.0/ 11.0/ 17.0/ 23.0/ 29.0/ 30.0/ 31.0/ 32.0/ 33.0/ 34.0/ 35.0/ 36.0/ 37.0/ 38.0/ 39.0/ 40.0

6.5-32.5

6.5/ 8.5/ 10.5/ 12.7/ 15.2(PG9)/ 16.2/ 18.6(PG11)/ 20.4(PG13.5)/ 22.5(PG16)/ 25.5/ 28.3(PG21)/ 32.5