Product Specifications
U DRILL
Non-Customized
SGS
All Size
U Drill
High Speed Steel
Metal Drilling
Black or White
2 to 5 Times
14-58mm
Wcmx & Spgt
HRC40-45
Taiwan/Korea/Switzerland
Nickel or Black
Double Helix Internal Cooling Holes
H6
0.01mm
according to customers requestment
According to Customers Requestment
all size
Zhuzhou, Hunan, China
820780900