Quenched and hardened high-hardness steel

Constructed entirely from 40CrMnTi high-hardness steel with additional quenching and forging for enhanced durability

Seamless One-Piece Integration

The extension shaft is integrally formed, ensuring tight alignment between the tool holder and extension shaft to prevent tool vibration

Precision-Fitted Complete Set

Standard BT40-FMB22 models reach up to 300mm in length. For machining beyond 300mm, use extension bars.