Quality assurance Large chip removal Universal chamfered round shank Tungsten carbide TIAN coating on the blade Fully sharpenedLarge chip removal, changing core, more stable. The large core diameter is ensured under the condition of cutting capacity, which greatly enhances the rigidity and shock resistance of the drill bit, and reduces the disconnection. Large chip removal rate, exquisite spiral groove, avoid sticking of drill, greatly improve production efficiency The universal chamfered round shank has good compatibility. Enhance the anti-vibration and cutting speed of the drill bit, and the clamping will be tighter without slipping.

Flute Diameter d(mm)	Shank Diameter D(mm)	Total Length L(mm)	Flute length l (mm)
2.5	3.0	98	50
2.6		108	60
2.7
2.8
2.9
3.0
3.1	4.0	118	70
3.2
3.3
3.4
3.5
3.6		128	80
3.7
3.8
3.9
4.0
4.1	5.0	140	90
4.2
4.3
4.4
4.5
4.6		150	100
4.7
4.8
4.9
5.0
5.1	6.0	162	110
5.2
5.3
5.4
5.5
5.6		172	120
5.7
5.8
5.9
6.0
6.1	7.0	183	130
6.2
6.3
6.4
6.5
6.6		193	140
6.7
6.8
6.9
7.0
7.1	8.0	204	150
7.2
7.3
7.4
7.5
7.6		214	160
7.7
7.8
7.9
8.0
8.5	9.0	225	170
9.0		235	180
9.5	10.0	246	190
10.0		256	200
10.5	11.0	271	210
11.0		281	220
11.5	12.0	292	230
12.0		302	240
12.5	13.0	313	250
13.0		323	260
13.5	14.0	334	270
14.0		344	280

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