Popular, Semi-automatic ("Tap-n-go") Dual-line head ,durable head , Simple tab-lock "push  design allows fast and easy reloading:

We can supply adaper bolts to fit most brand and models brush cutter, detail as below:

10 x 1.25mm FLH 10 x 1.25mm MLH 8.0 x 1.25mm FLH 8.0 x 1.25mm MLH 7.0 x 1.00mm MLH