Holemaking Tools Index Boring System Appearance Items Series Coolant ØRange Page DB Series for Boring System DB Rough boring head DB External Ø25~Ø204 C093 雙刃粗搪刀 DB Rough boring tool DB External Ø25~Ø204 C094 雙刃粗搪刀含 BT 刀柄 DBLA Rough boring head for large hole DBLA External Ø200~Ø610 C095 大徑雙刃粗搪刀 DBLA Rough boring tool for large hole DBLA External Ø200~Ø610 C096 大徑雙刃粗搪刀含 BT 刀柄 DBBT series taper shank DBBT - - C097 DBBT 系列搪刀刀柄 C004