Optional Round Boom Adapter for Altec Digger derricks with 9" Diameter Boom
- Optional Adapter to attach C4000744 and T4001753 3 Phase Lifts to Altec Digger derricks with 9" diameter Boom
- This is used to replace the square adapte
- Goes on to round boom and alllows the square mast E4000749P to be attached at different angles