Safely lengthens spanners providing more leverage.
Spanners simply lock into the tools cradle for immediate longer length to reach hard to access bolts.
Added length increases the spanners leverage & increases spanner torque.
Safer than using ad-hoc extenders such as pipes, etc.
Eliminates the need to purchase longer spanners.
Simple set-up & dismantling.
Ergo soft cushioned handle.
Cr-V