High carbon steel
Drill groove blackening treatment
3mm for locating holes and guide holes, weight 2g, total length 62mm, cutting length 34mm
4mm for locating holes and guide holes, weight 5g, total length 75mm, cutting length 41mm
5mm for drilling three-in-one connecting rod holes, weight 8.4g, total length 85mm, cutting length 52mm
6mm for drilling 6mm round wooden dowel holes, weight 12.7g, total length 89mm, cutting length 55mm
7mm for drilling three-in-one connecting rod holes, weight 100g, total length 99mm, cutting length 60mm
8mm for drilling 8mm round wooden dowel holes, weight 25g, total length 108mm, cutting length 70mm
9mm for drilling M8 screw rod holes, weight 36g, total length 114mm, cutting length 74mm
10mm for drilling 10mm round wooden dowel holes, weight 45g, total length 120mm, cutting length 86mm

