2-2.9*2-2.9*high speed steel*-*straight handle twist drill
3-4*high speed steel*-*straight handle twist drill
4.1-4.5*high speed steel*-*straight handle twist drill
4.6-5*high speed steel*-*straight handle twist drill
5.1-5.5*high speed steel*-*straight handle twist drill
5.6-6*high speed steel*-*straight handle twist drill
6.1-6.5*high speed steel*-*straight handle twist drill
6.6-7.0*high speed steel*-*straight handle twist drill
7.1-7.5*high speed steel*-*straight handle twist drill
7.6-8*high speed steel*-*straight handle twist drill
8.1-8.5*high speed steel*-*straight handle twist drill
8.6-9*high speed steel*-*straight handle twist drill
9.1-9.5*high speed steel*-*straight handle twist drill
9.6-10*high speed steel*-*straight handle twist drill
10.1-10.5*high speed steel*-*straight handle twist drill
10.6-11*high speed steel*-*straight handle twist drill
11.1-11.5*high speed steel*-*straight handle twist drill
11.6-12*high speed steel*-*straight handle twist drill
12.1-12.5*high speed steel*-*straight handle twist drill
12.6-13*high speed steel*-*straight handle twist drill
13.1-13.5*high speed steel*-*straight handle twist drill
13.6-14*high speed steel*-*straight handle twist drill