
The simplest of the Six Simple Machines. Cheap to buy, easily understood and simple to use. The lever forms the very core of tightening and loosening rotary fastenings.

Amazon.co.uk
4.0
£19.99
KIRXST 1/2 Inch Sq Drive Breaker Bar, 445 mm Pro Power Knuckle Breaker Flexi Bar, Flexible Handle Breaker Bar, Socket Wrench, Wheel Nut Spanner, Black

Amazon.co.uk
5.0
£23.99
DURATECH 1/2" Heavy Duty Breaker Bar, 600mm Breaker Bar,Knuckle Breaker Flexi Bar, Flexible Handle Breaker Bar, Socket Wrench for Wheel Nut Spanner (Black)