OQ 45-5 suitable for machines from 5-12 tons. OQ 45-5 is a fully automatic quick coupler system to suit all backhoe loaders between 5-12 t and excavators of 5-10 t and allow fast tool changes between mechanical and hydraulic attachments. The coupler is sturdy and backlash-free. OQ 45-5 is a further development of OQ 45-4 and has 5 hydraulic quick couplers instead of 4. OQ 45-4 is still in range and the new version is not backwards compatible. The new version provides the ability to use tools that require two separate hydraulic and leakage management. Optional electrical connector.