flexible inner shaft we supply for brushcutter,this is diameter8.0mm flexible inner shaft with both ends squared brushuctter inner shaft we can supply as follows: 1. Diameter: 6.2mm 6.7mm 8.0mm.2. More hard or more flexible depend on your choice. 3. Package: nylon bag and hard cartons, wooden pallets . 4. Please send inquiry to us, we are online everyday! and will reply you immediately.