M35 Straight Twist Drill （HSS）
M6X1
M6X1 TH2 SC
M6X1 TH2 SC HSS
M8X1.25 TH2 SC
SF type multifunctional drill bit 2.5D
SF type multifunctional drill bit 3.25D
SO type U-drill Small Diameter
SP type U-drill 2D
SP type U-drill 3D
SP type U-drill 4D
SP type U-drill 5D
