(BT40 ER20 70 AD) G2.5 @20,000 RPM(BT40 ER20 100 AD) G2.5 @20,000 RPM(BT40 ER20 120 AD) G2.5 @20,000 RPM(BT40 ER20 150 AD) G2.5 @20,000 RPM