DL-1206 nylon grass tap-n-go trimmer head 1.Heavy duty 2.Semi-automatic 3.Fit most brushcutters DL-1206 nylon grass tap-n-go trimmer head 1.New heavy-duty,semi-automatic type.2.Product diameter:130mm,with M10*1.25 left-hand female or male3.Suitable for most trimmer/brushcutters, even up to 51cc machines.4.Specific adaptor bolts available to fit most brands and models.